摘要:
The invention relates to the field of engineering physics in particular to the technique for detecting X-radiation, and it may be used for photometry, dosimetry as well as for measuring of space energy characteristics of optical-and-ionizing radiation fields with the aim of body X-ray scanning, human body in particular, to identify thereon or therein some highly undesirable objects or substances both for medical and security applications i.e. to prevent thefts and acts of terrorism and to provide the security of residential and other buildings that is in airports, banks and other high-risk areas. The X-ray screening of the body is realized by means of scanning it with a pre-shaped collimated bunch of X-radiation of low intensity due to moving the body and a source of X-radiation provided relative to one another, reception of X-radiation transmitted by the body, shaping and analysis of the image in its electronic form. A collimator and a detector are independently movable along linear guides. The collimator is connected to the source via a telescoping bar such that the translation of the collimator causes the rotation of the source.
摘要:
An apparatus for X-ray scanning of vehicles includes a pulsed X-ray source generating X-rays. A collimator forms a fan-shaped beam from the X-rays. A detector detects the fan-shaped beam after it passes through a vehicle. A speed sensor measures a speed of the vehicle passing through the apparatus and providing an electrical output corresponding to the speed. An image formation module converts an output of the detector into an image of the vehicle, based on the measured speed of the vehicle. A cross-section of the fan-shaped beam is substantially similar to a width of the detector. The X-rays comprise primarily photons with energy between 2.5 and 9 MeV. A filter is adjacent to the collimator for filtering out low energy X-ray photons. A vehicle presence sensor can be used, whose output is used to turn the X-ray source on and off. An alignment platform can be used for aligning the fan-shaped beam with the detector. A frequency of the pulses is adjusted based on the speed of the vehicle. The X-ray source is turned off if the speed of the vehicle is below a predetermined threshold.
摘要:
The invention relates to the field of engineering physics in particular to the technique for detecting X-radiation, and it may be used for photometry, dosimetry as well as for measuring of space energy characteristics of optical-and-ionizing radiation fields with the aim of body X-ray scanning, human body in particular, to identify thereon or therein some highly undesirable objects or substances both for medical and security applications i.e. to prevent thefts and acts of terrorism and to provide the security of residential and other buildings that is in airports, banks and other high-risk areas. The X-ray screening of the body is realized by means of scanning it with a pre-shaped collimated bunch of X-radiation of low intensity due to moving the body and a source of X-radiation provided relative to one another, reception of X-radiation transmitted by the body, shaping and analysis of the image in its electronic form.
摘要:
The invention relates to the field of engineering physics in particular to the technique for detecting X-radiation, and it may be used for photometry, dosimetry as well as for measuring of space energy characteristics of optical-and-ionizing radiation fields with the aim of body X-ray scanning, human body in particular, to identify thereon or therein some highly undesirable objects or substances both for medical and security applications i.e. to prevent thefts and acts of terrorism and to provide the security of residential and other buildings that is in airports, banks and other high-risk areas. The X-ray screening of the body is realized by means of scanning it with a pre-shaped collimated bunch of X-radiation of low intensity due to moving the body and a source of X-radiation provided relative to one another, reception of X-radiation transmitted by the body, shaping and analysis of the image in its electronic form. A collimator and a detector are independently movable along linear guides. The collimator is connected to the source via a telescoping bar such that the translation of the collimator causes the rotation of the source.
摘要:
The invention relates to the field of engineering physics in particular to the technique for detecting X-radiation, and it may be used for photometry, dosimetry as well as for measuring of space energy characteristics of optical-and-ionizing radiation fields with the aim of body X-ray scanning, human body in particular, to identify thereon or therein some highly undesirable objects or substances both for medical and security applications i.e. to prevent thefts and acts of terrorism and to provide the security of residential and other buildings that is in airports, banks and other high-risk areas. The X-ray screening of the body is realized by means of scanning it with a pre-shaped collimated bunch of X-radiation of low intensity due to moving the body and a source of X-radiation provided relative to one another, reception of X-radiation transmitted by the body, shaping and analysis of the image in its electronic form.