A radiographic inspection device is provided, including: a plurality of inspection channels, a scanning apparatus, a driving apparatus and a controller. The plurality of inspection channels are arranged side by side, and each inspection channel is configured to carry an object to be inspected. The scanning apparatus includes a radiation source mounted outside the plurality of inspection channels, and a receiving apparatus mounted outside the plurality of inspection channels and configured to receive a radiation beam emitted from the radiation source. The driving apparatus is configured to drive the radiation source and the receiving apparatus to move to a vicinity of each inspection channel. The controller is configured to control the scanning apparatus moved to the vicinity of one of the plurality of inspection channels to scan the object in the one of the plurality of inspection channels. The plurality of inspection channels may share one scanning apparatus and the object to be inspected in each inspection channel may be scanned independently.
G01N 23/04 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p.ex. rayons X ou neutrons, non couvertes par les groupes , ou en transmettant la radiation à travers le matériau et formant des images des matériaux
G01N 23/10 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p.ex. rayons X ou neutrons, non couvertes par les groupes , ou en transmettant la radiation à travers le matériau et mesurant l'absorption le matériau étant confiné dans un récipient, p.ex. scanners de bagage à rayons X
G01V 5/00 - Prospection ou détection au moyen de radiations nucléaires, p.ex. de la radioactivité naturelle ou provoquée
The present disclosure provides a trace detection device. The trace detection device comprises: a box body comprising a main body frame and a top plate, the top plate and the main body frame forming a fully enclosed cavity; an ion migration tube assembly in the cavity and on a first side of the cavity; and a preamplifier and high voltage circuit board in the cavity and on a second side of the cavity, the second side being opposite to the first side.
The present disclosure provides a filament power supply for an electron accelerator and an electron accelerator. The filament power supply includes: a rectifier circuit configured to convert a power frequency AC voltage signal into a DC voltage signal; an inverter circuit configured to convert the DC voltage signal into an AC voltage signal and output the AC voltage signal; a sampling circuit configured to sample at least one of a current or a voltage of the AC voltage signal to obtain at least one of a current sampling signal or a voltage sampling signal; a pulse width modulation control chip configured to adjust a duty cycle of a pulse width modulation signal output by the pulse width modulation control chip until a voltage of the current sampling signal is equal to that of a reference current signal, or a voltage of the voltage sampling signal is equal to that of a reference voltage signal; and a modulation circuit configured to modulate the power frequency AC voltage signal according to the pulse width modulation signal to obtain a modulation signal and output the power frequency AC voltage signal and the modulation signal to the inverter circuit to trigger the inverter circuit to convert the DC voltage signal into the AC voltage signal.
H05H 7/00 - TECHNIQUE DU PLASMA; PRODUCTION DE PARTICULES ÉLECTRIQUEMENT CHARGÉES ACCÉLÉRÉES OU DE NEUTRONS; PRODUCTION OU ACCÉLÉRATION DE FAISCEAUX MOLÉCULAIRES OU ATOMIQUES NEUTRES - Détails des dispositifs des types couverts par les groupes
H01J 37/06 - Sources d'électrons; Canons à électrons
H01J 37/147 - Dispositions pour diriger ou dévier la décharge le long d'une trajectoire déterminée
H02M 5/42 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant alternatif, p.ex. pour changement de la tension, pour changement de la fréquence, pour changement du nombre de phases avec transformation intermédiaire en courant continu par convertisseurs statiques
The present application discloses an X-ray detection system and method. The detection system includes: a beam source generator, first detectors, a second detector, a collimating device and a processor. The first detectors and the second detector are alternately arranged in a transmission direction of an object to be detected. The beam source generator is configured to emit a plurality of columns of beam signals, wherein each column of beam signals comprises a plurality of beam signals; the first detectors are configured to receive a plurality of columns of transmitted beam signals passing through the object; the collimating device is configured to perform a specificity selection from a plurality of columns of scattered beam signals passing through the object; the second detector is configured to receive scattered beam signals selected by the collimating device; and the processor is configured to determine a detection result of the object according to the plurality of columns of transmitted beam signals and the selected scattered beam signals.
G01N 23/00 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p.ex. rayons X ou neutrons, non couvertes par les groupes , ou
5.
SHIELDING STRUCTURE OF SAFETY INSPECTON EQUIPMENT AND SAFETY INSPECTION CHANNEL
A shielding structure of the safety inspection equipment includes a first carbon fiber layer, a polyurethane layer and a second carbon fiber layer, which are sequentially stacked to be configured as a shielding channel with two opened ends. The second carbon fiber layer is an outer layer of the shielding channel. The first carbon fiber layer and the second carbon fiber layer are made of carbon fiber materials. The polyurethane layer is made of polyurethane materials.
G01N 23/046 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p.ex. rayons X ou neutrons, non couvertes par les groupes , ou en transmettant la radiation à travers le matériau et formant des images des matériaux en utilisant la tomographie, p.ex. la tomographie informatisée
6.
DEVICE FOR COLLECTING SEMI-VOLATILE OR NON-VOLATILE SUBSTRATE
The present disclosure provides a device for collecting semi-volatile or non- volatile substance, including an air nozzle, a front cavity and a collecting body. The air nozzle is configured to eject air to a sample attachment surface. The front cavity has an upper port. The collecting body is sealingly connected to a lower end of the front cavity, inside of which is provided with a cylindrical cavity and a conical cavity arranged vertically coaxially, and bottom of which is provided with a sample outlet. The collecting body is provided with an air intake passage which is non-coplanar with respect to an axis of the cylindrical cavity and is disposed obliquely downward and inward. The collecting body is further provided with an air exhaust passage one end of which is a discharge port connected to the interior of the cylindrical cavity, the other end is connected to an air pump.
Embodiments of the present disclosure provide a sampling adsorber, a heat desorption chamber device, a sampling apparatus and an analyzer apparatus. The sampling adsorber includes an outer barrel, which includes an outer barrel first end and an outer barrel second end, and a core located in the outer barrel, the core having a core first end and a core second end, and the outer barrel first end and the core first end being located at a same side of the sampling adsorber. The core includes an adsorbent portion configured to adsorb a sample and a core body portion, the adsorbent portion being connected to the core body portion. Sizes of the outer barrel and the core are formed such that a gap is provided between them to allow external gas/air to enter the gap through the adsorbent portion and to subsequently be discharged from a downstream portion of the gap.
A scan imaging system for article safety inspection and an imaging method thereof. The scan imaging system comprises: a conveying unit (101), used to move an article (104) along a conveying direction of the conveying unit (101); multiple radiation sources (102), located on one side of the conveying unit (101) and sequentially disposed in a direction perpendicular to a plane in which the conveying unit (101) is located, the multiple radiation sources (102) alternately emitting radiation beams to form a scanning region; a linear detector array (103), located on the other side of the conveying unit (101) and used to detect a first projection image formed after the radiation beams emitted by the multiple radiation sources (102) pass through the article (104) while the article (104) is passing through the scanning region; and an imaging unit, used to obtain, according to the first projection image of the multiple radiation sources (102), a first reconstructed image of the article (104). The imaging system and the imaging method thereof eliminate artifacts in a reconstructed image of an article under detection.
G01N 23/04 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p.ex. rayons X ou neutrons, non couvertes par les groupes , ou en transmettant la radiation à travers le matériau et formant des images des matériaux
The present disclosure relates to a security check system and method. The present disclosure provides a security check system for identifying objects of interest from multiple objects, comprising: an object-of-interest determining device for determining whether an object is an object of interest; an image mark applying device for acquiring images related to selected objects among the multiple objects and recording image marks of the selected objects; and a mark detecting device for detecting the image marks, wherein the security check system is configured to identify whether the object is the object of interest based on the detection of the mark detecting device and provides a warning accordingly.
The present invention relates to an inspection system. The inspection system comprises a base, a boom lifting mechanism provided on the base, and a boom mounting a detector. The boom lifting mechanism includes at least two support arms arranged sequentially. The at least two support arms include a base arm and a distal arm. The base arm is connected to the base, the boom is mounted on the distal arm, the inspection system has a scanning state and a transporting state, and two adjacent support arms of the at least two support arms are rotatably connected so that the height of the boom in the scanning state is different from that in the transporting state. The boom lifting mechanism of the inspection system of the present invention lifts the boom by rotatably connecting two adjacent support arms, and presents less required driving force compared to the lifting of the boom directly in a vertical direction in the prior art. Thus, there is less weight of the driving mechanism for driving the lifting of the boom, so as to reduce the self-weight of the inspection system.
G01N 37/00 - RECHERCHE OU ANALYSE DES MATÉRIAUX PAR DÉTERMINATION DE LEURS PROPRIÉTÉS CHIMIQUES OU PHYSIQUES - Détails non couverts par les autres groupes de la présente sous-classe
B66C 23/18 - Installations comportant essentiellement un palonnier, une flèche ou une structure triangulaire agissant comme bras de levier, montées de façon à permettre des mouvements de translation ou d'orientation dans des plans verticaux ou horizontaux, ou bie spécialement adaptées pour être utilisées dans des emplacements particuliers ou à des usages particuliers
B66C 23/68 - Flèches repliables ou réglables d'une autre façon
G01N 23/00 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p.ex. rayons X ou neutrons, non couvertes par les groupes , ou
11.
METHODS, SERVERS AND SYSTEMS FOR OPERATING ON SECURITY INSPECTION DATA
The present disclosure provides a method, server and system for operating on security inspection data. The method performed by the server for operating on security inspection data comprises: receiving an operation request for target security inspection data from a client through a network; loading the target security inspection data from a storage server based on the operation request; performing, by an image processing module, image processing on the loaded target security inspection data; encoding the processed target security inspection data or a graphic interface including the processed target security inspection data; and transmitting the encoded target security inspection data or graphic interface to the client through the network in a video stream.
H04N 21/23 - Traitement de contenu ou de données additionnelles; Opérations élémentaires de serveur; Intergiciel de serveur
H04N 21/6587 - Paramètres de contrôle, p.ex. commande de lecture à vitesse variable ("trick play") ou sélection d’un point de vue
H04N 21/80 - Génération ou traitement de contenu ou de données additionnelles par un créateur de contenu, indépendamment du processus de distribution; Contenu en soi
The present disclosure discloses an inspection system for quarantine and a method thereof. The CT technology is applied to the field of quarantine supervision, overcoming a problem of objects in an image of a single-view or a multi-view X- ray machine being overlapped, as well as a problem of organics including contrabands in a conventional CT image being not highlighted, not elaborated, and having bad contrast. Accuracy and efficiency of inspecting an object by human operator for quarantine inspection can be considerably improved, which is of a high application value.
G01N 23/046 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p.ex. rayons X ou neutrons, non couvertes par les groupes , ou en transmettant la radiation à travers le matériau et formant des images des matériaux en utilisant la tomographie, p.ex. la tomographie informatisée
13.
HUMAN BODY RADIATION EXAMINING METHOD AND HUMAN BODY RADIATION EXAMINING SYSTEM
Disclosed is a human body radiation examining method and system. The human body radiation examining method comprising steps of: identifying a person to be examined; retrieving an accumulative radiation dose of the person according to identification result; obtaining a predicted single radiation scanning dose of a human body radiation examining device intended to perform a current radiation examination; calculating a sum value of the accumulative radiation dose of the person and the predicted single radiation scanning dose of the human body radiation examining device; and determining whether to perform the current radiation examination on the person according to a judgment whether the sum value exceeds a dose limit. The human body radiation examining system and method can improve the security of the human body radiation examination.
A multi-modal detection system (100) and method. The multi-modal detection system (100) comprises: a distributed radiation source (101), for irradiating an object to be detected (111); a primary collimator (102), for dividing rays from the distributed radiation source (101) into two portions, wherein one portion is used for XRD detection and the other portion is used for CT detection; a CT detection device (103), for performing CT detection to obtain a CT image of the object to be detected (111); and an XRD detection device (104), for performing XRD detection to obtain an XRD image of the object to be detected (111), wherein the CT detection and the XRD detection are performed simultaneously. According to the multi-modal detection system (100) and method, the CT detection device (103) and the XRD detection device (104) can share one distributed radiation source (101), and can perform CT detection and XRD detection simultaneously.
G01N 23/046 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p.ex. rayons X ou neutrons, non couvertes par les groupes , ou en transmettant la radiation à travers le matériau et formant des images des matériaux en utilisant la tomographie, p.ex. la tomographie informatisée
G01N 23/20 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p.ex. rayons X ou neutrons, non couvertes par les groupes , ou en utilisant la réflexion de la radiation par les matériaux
Disclosed are a smart security inspection system and method. The method comprises: a system distributing a security inspection tray to a person subject to security inspection through a splitting position, and binding information about the person subject to security inspection with a luggage identification identifier; identifying the luggage identification identifier, and acquiring the information about the person subject to security inspection according to the luggage identification identifier; acquiring risk information stored in advance according to the information about the person subject to security inspection; performing a differentiated security inspection on the person subject to security inspection and/or luggage according to the risk information, and binding data obtained with the information about the person subject to security inspection; and packing the luggage and ending the security inspection. In the present invention, according to information about a person subject to security inspection, relevant risk information about the person subject to security inspection is acquired, and a differentiated security inspection method is used to inspect the person subject to security inspection and luggage subject to security inspection, so that the accuracy rate of overall identification can be improved. By binding data and results of human body inspection and luggage and articles inspection with information about a person subject to security inspection and saving same, the inspection accuracy and traceability of an inspection process can be improved.
16.
METHODS AND DEVICES FOR DETECTING RADIOACTIVE SOURCES
A radiation source detection method (600) and system (700), comprising a detector (710) and a processor (720). When a detection object moves through the detector (710), the detector (710) measures a count rate curve of the detection object (S610); perform pattern recognition of the count rate curve (S620); and according to the result of the pattern recognition (S620), determine whether or not the detection object contains a radiation source, and if so, determine the type of radiation source (S630). By performing pattern recognition of a count rate curve (S620), the invention reduces the number of false alarms caused by naturally radioactive substances, increasing operation efficiency.
A safety inspection apparatus is disclosed in embodiments of the present invention. The safety inspection apparatus includes: an x-ray source including a ray emission focal spot and configured to emit a sectorial ray beam from the ray emission focal spot; and a plurality of detector modules each of which has a ray receiving surface, and which are arranged along a plurality of straight line segments. The plurality of straight line segments include a first straight line segment and two second straight line segments, and, the two second straight line segments extend from the two ends of the first straight line segment towards the x-ray source side, respectively. In a plane where the sectorial ray beam is located, a normal to the ray receiving surface of each of the detector modules at a midpoint of the ray receiving surface of the each of the detector modules passes generally through the ray emission focal spot of the x-ray source. With the technical solutions of the embodiments of the present invention, for example, good inspection effect can be obtained with a simple structure.
G01N 23/04 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p.ex. rayons X ou neutrons, non couvertes par les groupes , ou en transmettant la radiation à travers le matériau et formant des images des matériaux
The present invention discloses a vehicle-mounted inspection system. The vehicle-mounted inspection system comprises: a chassis; a rotation mechanism disposed on the chassis; a first ray emission device connected to the rotation mechanism and configured to emit a ray; a first detection device connected to the rotation mechanism and configured to receive the ray emitted by the first ray emission device; and a second ray emission device connected to the rotation mechanism and configured to emit a ray. The rotation mechanism is configured to rotate the first ray emission device, the first detection device and the second ray emission device substantially around an upright axis between a retracted position and an operating position. The vehicle-mounted inspection system according to the embodiments of the present invention comprises a plurality of ray emission devices and a plurality of detection devices, which acquires transmission images of an object under inspection viewed from a plurality of angles.
The present disclosure is directed to an electron source and an X-ray source using the same. The electron source of the present invention comprises: at least two electron emission zones, each of which comprises a plurality of micro electron emission units, wherein the micro electron emission unit comprises: a base layer, an insulating layer on the base layer, a grid layer on the insulating layer, an opening in the grid layer, and an electron emitter that is fixed at the base layer and corresponds to a position of the opening, wherein the micro electron emission units in the same electron emission zone are electrically connected and simultaneously emit electrons or do not emit electrons at the same time, and wherein different electron emission zones are electrically partitioned.
H01J 1/308 - Cathodes semi-conductrices, p.ex. cathodes à couches de jonction PN
B82Y 30/00 - Nanotechnologie pour matériaux ou science des surfaces, p.ex. nanocomposites
G01N 23/00 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p.ex. rayons X ou neutrons, non couvertes par les groupes , ou
G01N 23/04 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p.ex. rayons X ou neutrons, non couvertes par les groupes , ou en transmettant la radiation à travers le matériau et formant des images des matériaux
G01N 23/203 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p.ex. rayons X ou neutrons, non couvertes par les groupes , ou en utilisant la réflexion de la radiation par les matériaux en mesurant la rétrodiffusion
G01T 1/29 - Mesure effectuée sur des faisceaux de radiations, p.ex. sur la position ou la section du faisceau; Mesure de la distribution spatiale de radiations
A CT system and a method therefor. The system comprises: a delivery mechanism; a first scanning stage (A) for scanning an object under check to generate a first digital signal; a second scanning stage (B) arranged at a pre-determined distance from the first scanning stage (A) in the direction of motion of the object under check; a processing device (130) for re-establishing a CT image of the first image quality of the object under check based on the first digital signal and performing analysis on the CT image; and a control device (140) for adjusting a scanning parameter of the second scanning stage based on an analysis result of the processing device (130) so that the second scanning stage outputs a second digital signal, the processing device (130) at least re-establishing a CT image of the second image quality of the object under check based on the second digital signal, wherein the second image quality is higher than the first image quality. The system makes full use of the advantages brought by replacing the traditional slip ring technology with a distributed light source.
G01N 23/046 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p.ex. rayons X ou neutrons, non couvertes par les groupes , ou en transmettant la radiation à travers le matériau et formant des images des matériaux en utilisant la tomographie, p.ex. la tomographie informatisée
21.
ELECTRODE STRUCTURE FOR ION DRIFT TUBE AND ION DRIFT TUBE INCLUDING THE STRUCTURE
An electrode structure (2) for ion migration tube and an ion migration tube which includes the electrode structure (2) are provided. The electrode structure (2) includes an annular electrode whose inner edge is bent towards one side, and the cross section of the center part of the annular electrode is a swallow-tail-shaped. When an ion migration detection instrument is used, the migrating state ions can be traveling along the focusing power line. And because the high voltage interval between the electrodes is uniformly accelerated increase, the electric field generated by the electrode structure can make the ion in a uniformly accelerated migration status, and at the same time the resolution and sensitivity of the migration spectrum can also reach the best.
A device for ray beam scanning for back scattering imaging is provided. The scanning device includes: a radiation source, a fixed shield plate and a rotary shield body, which are both set between the radiation source and a scanning object. Wherein the fixed shield plate is fixed relative to the radiation source, the rotary shield body can rotate relative to the fixed shield plate. The fixed shield plate includes ray passing area that ray beam from the radiation source can pass through. A ray incidence area and a ray emission area are set respectively on the rotary shield body. The ray passing area of the fixed shield plate is intersected continuously with the ray incidence area and the ray emission area of the shield rotary body to form a scanning collimation hole when the rotary shield body is rotated for scanning. The ray passing area of the fixed shield plate is a linear aperture. The rotary shield body is a cylinder, the ray incidence area and the ray emission area are a series of discrete small holes set in a helix way respectively. In addition, a method for ray beam scanning for back scattering imaging is also provided.
G01N 23/203 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p.ex. rayons X ou neutrons, non couvertes par les groupes , ou en utilisant la réflexion de la radiation par les matériaux en mesurant la rétrodiffusion
23.
METHOD OF PROCESSING BODY INSPECTION IMAGE AND BODY INSPECTION APPARATUS
A method of processing a body inspection image and a body inspection apparatus are disclosed. In one embodiment, the method may comprise recognizing a target region by means of pattern recognition, and performing privacy protection processing on the recognized target region. The target region may comprise a head and/or crotch part. According to the present disclosure, it is possible to achieve a compromise between privacy protection and body inspection.
G01N 23/04 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p.ex. rayons X ou neutrons, non couvertes par les groupes , ou en transmettant la radiation à travers le matériau et formant des images des matériaux
24.
RADIATION INSPECTION APPARATUS AND INSPECTION METHOD FOR OBJECT SECURITY INSPECTION
The present invention relates to a radiation inspection apparatus for object security inspection, comprising: a ray generator configured to emit a ray, a collimator configured to collimate the ray emitted from the ray generator, and a detector configured to receive the collimated ray collimated by the collimator, wherein the collimated ray forms an irradiated area on the detector included by an effective detect area of the detector. The present invention also relates to a method of performing a security inspection to a body using a radiation inspection apparatus. With the above technical solutions, the present invention can achieve a low single inspection absorptive dose and a micro dose inspection while meeting inspection requirements to improve public radiation security.
G01N 23/04 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p.ex. rayons X ou neutrons, non couvertes par les groupes , ou en transmettant la radiation à travers le matériau et formant des images des matériaux
25.
DETECTION SYSTEM, DR IMAGING APPARATUS AND CT IMAGING APPARATUS
Disclosed is detection system for detection an object being conveyed along a convey path, the detection system comprises a DR imaging apparatus and a CT imaging apparatus which is provided at the downstream or upstream of the DR imaging apparatus along the convey path, wherein an average speed at which the object passes the DR imaging apparatus is higher than an average speed at which the object passes the CT imaging apparatus. The present invention also relates to a DR imaging apparatus for forming an image of an object by scanning the object, the object being conveyed along a convey path, the DR imaging apparatus comprising: an X-ray source; a detector for detecting passing of the object; a digital image processing unit; and a DR trigger module for data acquisition, wherein during the object passes the DR imaging apparatus, the DR trigger module triggers the DR imaging apparatus to perform data acquisition every time the object passes the DR imaging apparatus a predetermined distance A along the convey path.
G01N 23/046 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p.ex. rayons X ou neutrons, non couvertes par les groupes , ou en transmettant la radiation à travers le matériau et formant des images des matériaux en utilisant la tomographie, p.ex. la tomographie informatisée
Disclosed is a sampling method which comprises the steps of: blowing airflow towards a center portion of a sampling surface through a blowing port; and sucking the blown airflow from periphery of the sampling surface through a sucking port, or a sampling method which comprises the steps of: providing a sampling device on a sampling surface, the sampling device being shaped to form a sampling space together with the sampling surface, and the sampling device including a blowing port arranged at the center portion of the sampling device and a sucking port arranged at periphery of the sampling device; blowing airflow towards the sampling surface through the blowing port; and sucking the airflow blown towards the sampling surface through the sucking port so as to collect samples. The present application also relates to a sampling device which comprises a housing which is shaped to form a sampling space together with a sampling surface; a blowing port which is provided at a center portion of the housing to blow airflow towards the sampling surface; a sucking port which is provided at periphery of the housing to suck the airflow blown towards the sampling surface. According to the present invention, a blowing airflow having a higher speed is obtained with a lower flow rate of the blowing airflow, and at the same time, raised particles move towards the periphery together with the airflow and are captured by the sucking device provided at the periphery, thus, a sampling efficiency is improved.
G01N 33/94 - Analyse chimique de matériau biologique, p.ex. de sang ou d'urine; Test par des méthodes faisant intervenir la formation de liaisons biospécifiques par ligands; Test immunologique faisant intervenir des narcotiques
27.
TRACE DETECTOR AND ANALYTICAL METHOD FOR TRACE DETECTOR
A trace detector is disclosed. The trace detector comprises: a desorption chamber defining a desorption region, and the desorption chamber has a housing. The housing has a sample feeding port for introducing a substance to be detected into the desorption chamber and a gas discharge port for discharging gas entraining the sample from the desorption chamber. A controller is used for controlling the trace detector in such a manner that the sample feeding port and the gas discharge port are in fluid communication with the desorption chamber during pre-concentration process of the trace detector, thereby continuously feeding and collecting the sample. With the above manner, data collecting, processing and analyzing processes may be performed by the trace detector throughout the sample feeding process and the gas pre-concentrating process. The trace detector has an excellent detecting period of time whether the substance to be detected in the gas is in a high concentration state or a low concentration state, and the trace detector can perform continuous sampling for a long time, thereby improving a ratio of the amount of trapped substance to the amount of the substance entrained in the gas to be detected and the amount of the cumulated trapped substance, decreasing the probability of failing to detect the substance, and increasing detection sensitivity. In addition, the detection efficiency of the detector is increased during the gas pre-concentration process.
The present invention discloses a sample analyzer comprising a heater and a sample feeding carrier, wherein the heater and the sample feeding carrier are integrally formed, such that the positional relation between the sample feeding carrier and the heater is fixed. Compared with the prior art, since the heater and the sample feeding carrier of present invention is formed integrally, the positional relation between the sample feeding carrier and the heater is fixed, accordingly, the consistency in heating-up of the sample is enhanced. Moreover, because the sample feeding carrier and the heater are made of low capacity material, the change of the temperature is rapid during the heating process, as a consequence, the analyzer consumes less power and could achieve a rapid temperature control.
brevets
