283 results about "Explosive detection" patented technology

A combined systems user interface (CUI) may be configured with an advanced technology screening checkpoint (ATSC), which is a passenger-friendly, high performance system for screening passengers and carry-on items to detect assembled bombs, bomb components, metallic and non-metallic weapons, and other contraband items. The CUI may include a baggage, passenger, and secondary screening status regions. The baggage screening status region displays screening information generated by an explosives screening system and a baggage imaging system, while the passenger screening status region displays screening information generated by an explosives detection portal and a metal detection portal. In some implementations, a secondary screening status region displays screening information generated by a body scanning system and an enhanced explosives screening system.

An advanced technology screening checkpoint system includes a baggage screening zone, a passenger screening zone, and a secondary screening zone. The baggage screening zone may include an explosives scanning system and an imaging system, while the passenger screening zone may include an explosives detection portal and a self-divestment portal to show passengers what to divest prior to screening by a high sensitivity metal detection portal. In some implementations, a secondary screening zone includes a sealed-bottle scanning system, an enhanced explosives detection system, a weapons search routine, and a body scanning system. Centralized monitoring of screening results for individual detection and screening systems of the baggage, passenger, and secondary screening zones may be provided by a combined user interface (CUI).

A combined systems user interface (CUI) may be configured with an advanced technology screening checkpoint (ATSC), which is a passenger-friendly, high performance system for screening passengers and carry-on items to detect assembled bombs, bomb components, metallic and non-metallic weapons, and other contraband items. The CUI may include a baggage, passenger, and secondary screening status regions. The baggage screening status region displays screening information generated by an explosives screening system and a baggage imaging system, while the passenger screening status region displays screening information generated by an explosives detection portal and a metal detection portal. In some implementations, a secondary screening status region displays screening information generated by a body scanning system and an enhanced explosives screening system.

An explosives detection system which includes computed tomography (CT) and quadrupole resonance (QR) sensors for identifying particular explosive compounds present in passenger baggage. The CT sensor may be configured to automatically identify the presence or absence of bulk military, commercial, and sheet explosives during CT scanning of the baggage. Similarly, the QR sensor may be configured to responsively generate RDX and PETN signals during QR scanning of the passenger baggage. Using any of a variety of inspection protocols, the explosives detection system may generate an output alarm based upon data obtained from the CT and QR sensors.

System for control of ion species behavior in a time-varying filter field of an ion mobility-based spectrometer to improve species identification for explosives detection.

The CT threat resolution system includes an primary EDS scanning process to identify threats and the nature of threats and a plurality of secondary CT scanning processes to resolve threats. The primary EDS scanning process and secondary CT scanning processes can be either separate machines or multiple processes within a single scanner. The secondary scanning process may utilizes dual energy scanning and / or high resolution scanning to resolve threats based upon the nature of the threat. An alarm indicates threats which cannot be resolved by the secondary CT scanning process for further operator investigation. Threats may be reviewed and resolved by an operator before the secondary CT scanning process.

The system and method for explosives detection may be used for detecting the presence of explosive elements. A testing device may have a case with a cover. A sample holder may be disposed in the case for receipt of a sample element and may have a sample retainer. The sample element may have a swipe pad attached to a backing element a heater may be disposed in the sample holder wherein the heater may be below the swipe pad adjacent the backing element when the sample element may be positioned in the sample holder. The heater may be in communication with an electric power source. The case may have a plurality of cavities formed therein for receipt of a plurality of fluid containers. The plurality of fluid containers may have at least a first reagent fluid and a second reagent fluid.

An integrated, multi-sensor, Level 1 screening device is described, which system provides a next-generation Explosives Detection System (EDS) that enables high throughput, while drastically reducing false alarms. In exemplary embodiments, the present system comprises a non-rotational, Computed Tomography (CT) system and a non-translational, X-ray diffraction (XRD) system, both in an inline configuration.

Methods and apparatus are provided employing rapid scanning continuous wave terahertz spectroscopy and imaging for the non-destructive evaluation of materials such as animal hides and natural cork, and explosive detection, concealed weapon detection, and drug detection. A system employing an aperiodic detector array and implementing phase modulation at 100 kHz significantly reduces the imaging time and enables interferometric images of a THz point source to be obtained at several frequencies between 0.3 and 0.95 THz.

A tomographic volumetric x-ray imaging system that uses either multiple x-ray sources in a fixed configuration or a single source that can be shifted to provide a plurality of incident aspect angles. A combination of volumetric x-ray image data and multi-energy image acquisition provides an effective method for high confidence explosives detection within baggage or parcels.

The present invention relates to methods for producing non-detonable and non-explosive parent-odor scent simulants of both detonable and entropy-burst chemical explosive materials. A detonable explosive material is a material that explosives with the aid of detonation while an entropy burst explosive material is a very sensitive energetic material that does not require detonation, but explodes through a spontaneous decomposition of its molecules into gaseous products. The invention also presents representative non-detonable, non-hazardous compositions of such simulants that can be safely and effectively utilized within a broad spectrum of biological and non-biological explosives detection programs, non-limiting examples being the training of biological search-and-detect creatures such as explosive detecting dogs and the calibration of electronic explosive detecting instruments that rely on the principles of vapor sampling for their operations.

An apparatus and method for preconcentrating particles and vapors. The preconcentrator apparatus permits detection of highly diluted amounts of particles in a main gas stream, such as a stream of ambient air. A main gas stream having airborne particles entrained therein is passed through a pervious screen. The particles accumulate upon the screen, as the screen acts as a sort of selective particle filter. The flow of the main gas stream is then interrupted by diaphragm shutter valves, whereupon a cross-flow of carrier gas stream is blown parallel past the faces of the screen to dislodge the accumulated particles and carry them to a particle or vapor detector, such as an ion mobility spectrometer. The screen may be heated, such as by passing an electrical current there through, to promote desorption of particles therefrom during the flow of the carrier gas. Various types of screens are disclosed. The apparatus and method of the invention may find particular utility in the fields of narcotics, explosives detection and chemical agents.

The biosensor involves a specially designed surface which can be optically coupled to a Surface Plasmon Resonance spectrometer. The key components of the biosensor are a bimetallic layer, a self assembled monolayer of chemicals and a layer of biomolecules such as special antibodies. The innovative bimetallic layer combines the sensitivity of silver metal and durability of gold and thus make it an ideal biosensor layer not only for a low volatility gas phase detection but also for a liquid phase detection. The successful application of the biosensor in high explosive substance detection proves that the biosensor is a sensitive and highly specific device for security and anti-terrorism applications, when it is combined with a Surface Plasmon Resonance Spectroscope.

A computed tomography (CT) image quality phantom for use in calibrating explosive detection systems (EDS) at airports. A foam core block containing up to five right cylinder rod members is positioned in a housing member which is adapted to be passed through an airport luggage scanning machine. The rod members are of different lengths in order to create different data slices for analysis. The housing has a lead-in member at least at one end in order to allow passage through an EDS more easily and provide accurate CT calibrating.

Multitask vehicles for military use, rescue, transport, and explosive detection and removal. In one embodiment, the multitask, motorized vehicle, includes: a vehicle body having a rigid frame with a pair of front wheels and a pair of rear wheels mounted thereon; and a rotary mounting platform disposed on top of the vehicle body and which has a mounting portion being configured to interchangeably mount and remove various secondary systems or components, thereby permitting the multitask, motorized vehicle to change functions. Other embodiments are disclosed.

An explosive detection system includes an X-ray inspection apparatus, a mover for moving an object to be inspected to the X-ray inspection apparatus, a sample introduction probe for sampling a gas sample from the object to be inspected, a pipe for introducing the sampled gas into a corona discharge region and for subjecting the sampled gas to negative corona discharge to ionize the sampled gas and to generate negative ions. A mass spectrometer is provided to analyze the mass of the negative ions of the sampled gas and to provide results thereof. Inspection by the X-ray inspection apparatus is performed in relation to sampling of the gas sample, and explosive detection system inspects whether or not an explosive is present in the object to be inspected, from the analysis results of the sampled gas.

A substrate card, in the form of a Metrocard®, farecard, keycard, passport, boarding pass or the like, presented for controlled gateway passage at an automatic reader, is photographed and the captured card image is digitized. The card then is heated to a point where trace explosive present on the card is subjected to an energetic reaction imparting a char smudge signature. The card is cooled and a second image is captured and digitized. The digitized images are subjected to a subtractor stage resulting in an isolated char smudge signature image possibly in the form of at least a partial fingerprint residue recognizable by a computer. Upon char image detection, which may include a fingerprint matching process, the computer directs the controlled gateway to restrain the card presenter and secure the card as evidence. The card may be pre-coated to avoid ignition and to enhance trace material adhesion.

An apparatus for detecting volatile compounds derived from explosive materials with very high sensitivity. The apparatus is composed of field effect transistors of non-oxidized silicon nanowires modified with specific functional groups including, in particular, amine, imine and / or carboxyl moieties. Further a system is provided comprising the apparatus in conjunction with learning and pattern recognition algorithms and methods of use thereof for detecting and quantifying specific explosive compounds.

The present invention relates to a class of fluorescent, organic nanofibrils, and particularly the films comprising entangled piling of these nanofibrils exhibiting effective quenching of their fluorescence upon exposure the vapor of explosives. The invention also relates to a sensor and a method for sensing the explosives vapor and other volatile organic compounds, including the explosives taggants through the modulation of the fluorescence of the nanofibril film and the electrical conductivity of the nanofibrils. The invention also relates to a development of synthetic methods, protocols and techniques that leads to production of various arylene-ethynylene macrocycle (AEM) molecules, which consist of a shape-persistent, toroidal scaffold in planar conformation, with minimal ring strain and highly tunable ring sizes (from 0.5 nm to above 10 nm). The invention also relates to an approach to optimization of the one-dimensional molecular arrangement along the long axis of the nanofibril, which provides increased exciton (excited state) migration (via cofacial intermolecular electronic coupling) and charge transport (via pi-electronic delocalization). A combination of long-range exciton migration and efficient charge transport makes the nanofibrils ideal as sensory materials for detecting explosives and other volatile organic compounds through both optical and electrical sensing mechanisms.

The invention discloses an explosive substance testing system apparatus and testing method thereof. The apparatus includes an X-ray light path subsystem, a detecting subsystem, a servo subsystem and a computer subsystem, wherein the light path subsystem includes a 75Kev and a 150Kev energy segment white light sources; the light path subsystem and the detecting subsystem are totally mounted on a multiple shaft mechanical platform, at different angle positions at the same side relative to the object, so as to configure a Compton backscattering geometric light path. The testing method includes a computer software control method and a data processing method, including: adopting a control method integrating the scanning detecting and tracking detecting, acquiring the density information and Compton scattering energy difference pair information data of the object by a solid state detector to execute data-handling and characteristic matching, obtaining the density and effective atomic number information of the object, and determining whether the object is the explosive substance and the affiliated species by the pattern recognition, thereby implementing the quick, safe and nondestructive testing, which is suitable for flow ability test of case or human body carrying explosive substance.

The presence of trace molecules in air may be determined using an ion mobility spectrometer. Such devices may be used in the fields of explosives detection, identification of narcotics, and in applications characterized by the presence of very low airborne concentrations of organic molecules of special interest. The sensitivity of such instruments may depend upon on the method of gas sampling utilized. A virtual wall gas sampling system can greatly improve the sampling efficiency, particularly when the sampling needs to be performed at a distance from the air intake and large volumes need to be sampled. The virtual wall gas sampling system consists of an intake gas flow and a separate group of one or more sheet-like gas flows, which may be either mutually deflected to move with a circular motion or may be formed into a cylindrical bounding surface.

The presence of trace molecules in air is often determined using high sensitivity gas sensing instruments, such as an ion mobility spectrometer. Such devices are commonly utilized in the fields of explosives detection, identification of narcotics, and in applications characterized by the presence of very low airborne concentrations of organic molecules of special interest. The sensitivity of such instruments is dependent on the concentration of target gas in the sample. The sampling efficiency can be greatly improved when the target object is warmed, even by only a few degrees. A directed emission of photons in the range between infrared and ultraviolet light can be used to significantly enhance vapor emission.

The presence of trace molecules in air is often determined using a well-known device called an ion mobility spectrometer. Such devices are commonly utilized in the fields of explosives detection, identification of narcotics, and in applications characterized by the presence of very low airborne concentrations of organic molecules of special interest. The sensitivity of such instruments is dependent on the method of gas sampling utilized. The vortex sampling nozzle consists of an intake gas flow and a separate coaxial heated, emitted gas flow that is deflected to move with a circular motion. A heated vortex sampling nozzle can greatly improve the sampling efficiency for low volatility target molecules, particularly when the sampling needs to be performed at a distance from the air intake and the vapor pressure of the target molecules is very low. Additionally, the vortex air may contain one or more additional substances that promote vaporization, combine with the target molecule, or provide a known marker in the ion mobility time-of-flight spectrum.

System for control of ion species behavior in a time-varying filter field of an ion mobility-based spectrometer to improve species identification for explosives detection.

A method of and a system for displaying volumetric multi-energy CT images are disclosed, wherein a CT image, a Z image, and a label image from an automatic explosive detection are provided, are disclosed. The method comprises generating an index image through a nonlinear transformation of the CT image, the Z image, and the label image, rotating and coloring the index image as desired, and rendering and displaying the rotated and colored image.

Disclosed is an x-ray computed tomography inspection system having a computer processor configured to execute one or more specialized software-based image processing and / or detection methods. Among other features and benefits, the new methods create low-resolution SP images from low-resolution CT volumetric data, thus significantly improving throughput. An image processing and / or detection method segments and analyzes the generated SP images and decides whether the previously requested low resolution reconstructed CT image(s) are adequate, or whether additional higher resolution reconstructed CT images are needed.

An explosive detection system based on an ion mobility spectrometer detects the presence of trace molecules in air. Such instruments require an ion source to ionize the trace molecules. An ion source that does not require a radioactive source to operate can use the photoelectric effect to produce electrons. Such a photoelectric ion source will gradually be contaminated and lose its photoelectron emission properties when operated in the air. The photocathode of the ion source can be automatically regenerated by a heater in thermal communication with the photocathode. The heater may be activated when the photoelectron emission falls below a predetermined value ro may run or cycle continuously.

A solid state electrochemical gas sensor for detecting trace amounts of explosive materials and a method of detecting such explosives. The sensor has at least two electrodes. The at least two electrodes include a first catalytic electrode and a second catalytic electrode that are dissimilar and an electrolyte disposed between the first catalytic electrode and the second catalytic electrode. The sensor detects at least one gaseous specie emitted by the explosive material. At least one of a potential difference and a current flow is generated by at least one of catalytic and electrochemical reactions of the gaseous species emitted by the explosive material on one of the first catalytic electrode, second catalytic electrode, and the electrolyte. An explosive detection system that incorporates such sensors and methods is also described.

The invention belongs to the technical field of preparation of an inorganic and organic hybrid material with a fluorescence property and particularly relates to an ion exchange method for preparing an aggregation induced emission (AIE) group functionalized laminar zirconium phosphate material. Cation groups containing water-soluble AIE molecules are intercalated into the material by an ion exchange intercalation mode by using zirconium phosphate with a laminar structure as a framework element and organic amine as a pre-swelling agent, so that the inorganic and organic hybrid material with the strong fluorescence can be obtained. The method is suitable for various laminar zirconium phosphate materials which contain the AIE water soluble molecules of the cation groups and have the anion framework structures. The interlamellar spacing and the luminance of the zirconium phosphate can be effectively controlled by changing the varieties and the adding amounts of the AIE molecules or the pre-swelling agents, so that the material can be widely applied to the fields of medicine delivery, bioimaging, explosive detection and the like.