Abstract:
PROBLEM TO BE SOLVED: To provide an imaging device which detects a hidden object carried by a human body.SOLUTION: An X-ray human organism examination system can quickly examine a human organism in order to detect metals, materials (plastics, ceramics, illegal drugs) of small atomic numbers z, and other prohibited articles hidden underneath human clothes or in the human body. In an object detection system, two scanning modules are placed in parallel oppositely to each other. The two modules are placed at intervals so that subjects such as human beings can stand between the two modules or pass between the two modules. A first module and a second module have radiation sources such as X-ray and detector columns respectively. The subject being examined stands between the two modules in the way that a front side of the subject faces one of the modules and a back side faces the other module.
Abstract:
A portal for scanning a person walking through a surveillance volume defined by the portal, wherein the surveillance volume is illuminated by a magnetic field, and wherein the person is carrying at least one object on the person's body, the portal having a plurality of magnetic sensor modules arranged in at least one array and positioned on at least one of first and second opposing sides of the portal, wherein the plurality of magnetic sensor modules measure perturbations in the magnetic field caused by the at least one object in the surveillance volume, and wherein each of the magnetic sensor modules includes first, second and third magnetometers configured in substantially three orthogonal directions; and a processor associated with the plurality of magnetic sensor modules to process the measured perturbations to determine a location and magnetic signature of the at least one object.
Abstract:
An apparatus for detecting constituents in a sample includes first and second drift tubes defining first and second drift regions and a controllable electric field device within a fragmentation region coupled to the first and second drift tubes. The apparatus also includes a first ion shutter positioned between the first drift and fragmentation regions. The apparatus further includes a control system configured to regulate the first ion shutter, thereby facilitating injection of a selected portion of ions from the first drift region into the fragmentation region. The control system is also configured to regulate the controllable device to modify the selected portion of ions to generate predetermined ion fragments within the fragmentation region, thereby facilitating injection of a selected portion of the predetermined fragmented ions into the second drift region. A method of detecting constituents in a sample is facilitated through such an apparatus.
Abstract:
A desorber for a trace detection system includes an inlet configured to receive a sample, a heating element configured to generate a vapor from the sample, and an active cooling element configured to cool the desorber.
Abstract:
The present disclosure is directed to methods and systems for calibration, calibration verification, and sensitivity checks for a detector. The methods and systems include calibrating a detector by releasing at least one calibrant from at least one calibrant chamber in flow communication with the detector. The systems and methods further include verifying the calibration by releasing at least one verification substance from at least one verification chamber in flow communication with the detector. The systems and methods further include checking a sensitivity of the detector by releasing at least one sensitivity substance from at least one sensitivity chamber in flow communication with the detector.
Abstract:
The present disclosure is directed to methods and devices for moisture-based calibration. In particular, the present disclosure is directed to moisture monitoring devices that trigger calibration of substance detection devices. The disclosure described includes the use of moisture sensors to monitor, for example, the water vapor or humidity content of gas within a substance detection device flow circulation and triggers a smart calibration such as, for example, a mobility calibration or a compensative voltage-based calibration.
Abstract:
The present disclosure includes a sampling device for collecting a sample from a target surface, the sample device having a handle, a body extending from the handle, and a mechanical force feedback mechanism. The mechanical force feedback mechanism is configured to change an orientation of the body relative to the handle when force is applied to a target surface by the sampling device.
Abstract:
Systems and methods are used to increase the penetration and reduce the exclusion zone of radiographic systems. An X-ray detection method irradiates an object with X-ray fanlets including vertically moving fan beams, each fanlet having an angular range smaller than the angular coverage of the object. The fanlets are produced by modulating an X-ray beam, synchronizing the X-ray beam and the fanlets, detecting the fanlets irradiating the object, collecting image slices from the detector array corresponding to a complete scan cycle of the fanlets, and processing the image slices collected for combining into a composite image.
Abstract:
The present specification discloses methods for inspecting an object. The method includes scanning an object in a two-step process. In the primary scan, a truck or cargo container (container) is completely scanned with a fan beam radiation, the transmitted radiation is measured with an array of detectors, and the transmission information and optionally the fission signatures are analyzed to determine the presence of high-density, high-Z and fissionable materials. If the container alarms in one or more areas, the areas are subjected to a secondary scan. This is done by precisely repositioning the container to the location of the suspect areas, adjusting the scanning system to focus on the suspect areas, performing a stationary irradiation of the areas, and analyzing the measured feature signatures to clear or confirm the presence of SNM.
Abstract:
The present specification describes a scanning/inspection system configured as a dual-view system using dual-energy sensitive stacked detectors that are partially populated with multi-energy discriminating detectors for overall enhanced energy resolution and therefore improved discrimination of materials through better estimation of material physical properties such as density and effective atomic number.