51 results about "Explosive detection" patented technology

The invention relates to the technical field of explosive detection, in particular to a latex explosive water phase solution and water content rapid detection system which comprises a refractive index detection module, a near infrared spectrum detection module, a production line monitoring module, a data processing module and a data fusion module. The near infrared spectrum detection module is used for collecting the detection moisture content of a water-phase solution, and the production line monitoring module is used for collecting process parameters. According to the method, by calculating the comprehensive index of the water phase solution, interference possibly generated among the water content, the solute concentration and the technological parameter change is effectively solved, parameter regulation and control in the production link are more accurate, whether the production technology of the latex explosive deviates from the target range or not can be judged by comparing the comprehensive index with the index threshold value, and the method is suitable for popularization and application. The system is helped to find abnormal production in time, and accidents or quality problems caused by process fluctuation are prevented.

The invention discloses an explosive detection device based on a high-collimation laser irradiation optical beam expanding system. The explosive detection device comprises a fixed base, and a carbon dioxide laser, a first-stage light beam expanding system and a second-stage light beam expanding system are installed on the fixed base; a light beam emitted by the carbon dioxide laser enters the first-stage light beam expansion system, and an exit pupil of the first-stage light beam expansion system is an entrance pupil of the second-stage light beam expansion system; light beams emitted by the secondary light beam expansion system form detection laser beams, and a detection station is further installed and used for placing an object to be detected; the fixed base is also provided with an infrared camera and a visible light camera, and the infrared camera and the visible light camera are used for shooting the object to be detected; the system further comprises an image analysis system, and the infrared camera and the visible light camera are connected with the image analysis system and carry out signal transmission. In the invention, the explosive detection device based on the high-collimation laser irradiation optical beam expanding system can be widely applied to safety inspection of explosives.

The present disclosure provides an explosive detection device and an explosive detection method based on the detection device. The explosive detection device comprises a sampling member provided with a plurality of sampling portions, each of which is configured to accommodate a sample for sampling the same kind of article; and one or more liquid storage portions storing a color developing agent and configured to release the color developing agent to the sample of a part of the sampling portions, so that all the samples are divided into color developed samples and original color samples; a detection assembly comprising a detection container, the detection container defining cavities accommodating the sampling member, each of the cavities being divided into a first detection chamber suitable for accommodating a sampling portion carrying a color developed sample and a second detection chamber suitable for accommodating a sampling portion carrying an original color sample; a first detection portion and a second detection portion for extracting feature information of at least a part of substances in the samples, respectively; and an output assembly configured to output information of whether and which organic explosive and / or inorganic explosive the article has.

The application belongs to the field of explosive detection, and discloses a polyimide loaded triaminophthalocyanine probe, a preparation method thereof and application thereof in detecting nitroaromatic explosives. The probe has the following general structure formula. The probe is prepared by cross-linking copolymerization of 5,10,15-tri(4-aminophenyl)-20-phenyl porphyrin, aromatic tetracid dianhydride and aromatic organic diamine. The polyimide high-molecular cross-linked branch loaded triaminophthalocyanine compound with fluorescent light emitting performance is prepared for the first time. The probe is applied to detecting various nitroaromatic explosives by quenching fluorescence response, and the detection method is simple, and has good application prospect in the field of public security.

The invention relates to the technical field of bionic unmanned aerial vehicle security check and explosive ordnance disposal, and discloses a variable configuration security check and explosive ordnance disposal device for a bionic unmanned aerial vehicle and a use method thereof.The variable configuration security check and explosive ordnance disposal device comprises a bionic unmanned aerial vehicle body, an extension rod is installed on the surface of the bionic unmanned aerial vehicle body, and a power device is fixedly connected to the top of the extension rod; fan blades are fixedly connected to the output end of the power device, a visual detection device is installed on the top of the bionic unmanned aerial vehicle body, a supporting frame is fixedly connected to the surface of the extension rod, and a transfer frame is fixedly connected to the bottom of the bionic unmanned aerial vehicle body. An electric telescopic frame is started to push two inclined panels to move close to each other, the inclined panels shovel explosives through inclined planes when moving, after the explosives are shoveled up, the two inclined panels continue to move close to each other, so that the surfaces of positioning plates make contact with the explosives, the explosives are limited through the positioning plates, and the explosives are separated from each other. An electric push rod is started to push an inclined panel to move upwards, and when the inclined panel moves upwards, the explosives can be pushed to enter the transferring frame.

The application discloses an explosive detection device, and relates to the technical field of explosive detection, which comprises a detection mechanism, a placing seat installed at the bottom of the detection mechanism, a radiation-proof mechanism arranged on one side of the detection mechanism, and a locking support arranged on one side of the radiation-proof mechanism. The detection mechanism comprises a detector body, a display screen fixedly installed at the top of the detector body, and a handheld handle fixedly installed on one side of the detector body. A starting button is arranged at the bottom of the handheld handle. Symmetrical fixing grooves are formed in the bottom of the detector body. When a container extrudes a second rotating support, the second clamping plate can rotate, so that the container can be clamped and fixed. Through the relative rotation of the first clamping plate and the second clamping plate, containers with different diameters can be clamped, so that more extensive containers can be adapted. The radiation-proof cover body can shield the radiation generated during detection, so that the protection effect is achieved.

Embodiments of the present application provide an explosive detection method, comprising: receiving a detection signal to generate a detection spectrum, the detection spectrum being a spectrum of gamma rays generated by a reaction between a to-be-detected object and neutrons; deducting a detection background in the detection spectrum to obtain a first processed spectrum; deducting a characteristic peak at a nickel peak position in the first processed spectrum to obtain a second processed spectrum; and determining whether the to-be-detected object contains an explosive based on the second processed spectrum. Embodiments of the present application also provide an explosive detection device and a computer-readable storage medium.

The invention belongs to the technical field of explosive detection, and particularly relates to a shallow-buried explosive detection method and system based on multi-modal fusion, and the system comprises a magnetic signal obtaining unit, a sound signal obtaining unit, a processing unit and an output unit. And multi-modal signal synchronous acquisition, feature extraction and fusion discrimination are realized under a unified time frame, so that the recognition stability of shallow-buried explosives under complex environmental conditions is improved.

The application discloses an autonomous explosive disposal detection system and control method based on an edge full-stack cluster, aiming to solve the computing power bottleneck of the explosive disposal robot in a weak network environment and the reliability problem of grabbing in a complex scene. The system is composed of a four-legged mobile chassis and an execution mechanical arm carrying an airborne edge computing node, and the computing node integrates video processing, Web business hub and comprehensive control layer. The method constructs a full life cycle tactical closed loop: precise searching is realized through spatial tactical calibration, target tracing and macroscopic approach; a dual-mode fault-tolerant architecture based on confidence is innovatively proposed, autonomous grabbing confidence is calculated in real time after tactical anchoring, visual servo grabbing is performed when the confidence is high, the process is automatically suspended and seamlessly switched to a low-delay master-slave synchronous remote control mode when the confidence is low, and finally the safe transfer of explosives is completed. The application greatly improves the operation survival rate and safety of special robots in a broken network and unstructured environment.

The invention discloses an explosive detection processing device based on a laser radar, and relates to the technical field of explosive detection. The device comprises a detection processing system, a laser radar detection mechanism, an image acquisition mechanism, a metal detection mechanism, an X-ray detection mechanism, an explosive detection mechanism and an explosive processing mechanism. The detection processing system comprises a server, an image display unit and an alarm module; the laser radar detection mechanism is used for performing imaging judgment on the shape and the size of an article; the metal detection mechanism is used for detecting whether the article contains metal; the X-ray detection mechanism is used for imaging the interior of the article; the explosive detection mechanism comprises a Raman spectrum acquisition unit and a trace detection unit. The appearance and size of the laser radar are judged, whether most of objects are explosives or not can be eliminated by combining image recognition, metal detection and X-ray detection, and the problem that in the prior art, micro trace detection, Raman spectrum detection and other detection methods cannot be effectively applied to equipment is solved.

The invention provides a passive explosive detector, the passive explosive detector comprises a machine body, a heating head assembly, a detection assembly, a ventilation pipe and a rotational flow part, the heating head assembly is arranged at one end of the machine body, a heating cavity is formed in the heating head assembly, the detection assembly is arranged in the machine body, and the ventilation pipe is arranged in the machine body. An air inlet channel and an air outlet channel are formed in the ventilation pipe, the air inlet channel is communicated with the heating cavity and the outside, and the air outlet channel is communicated with the heating cavity and the detection assembly; the rotational flow component is located in the air inlet channel or located between the air inlet channel and the heating cavity. The passive explosive detector provided by the embodiment of the invention has the advantage of accurate detection result.

The utility model discloses an explosive detection and elimination device which comprises a movable device main body, and an explosive detection module, an explosive elimination module, a communication module, a main control module, a display screen and a camera which are arranged on the movable device main body, the explosive detection module, the explosive ordnance disposal module, the communication module, the display screen and the camera are electrically connected with the main control module. The main control module is in communication connection with the remote control module through the communication module; the explosive detection module comprises a millimeter wave radar signal transmitting and receiving unit. According to the utility model, explosives can be detected in a long distance, and the detection and identification precision of the explosives is improved.

The utility model relates to the field of explosive detection, and discloses a heat insulation structure for non-inductive trace explosive detection equipment, an external heating module comprises a shell, a heating assembly, a PCB (Printed Circuit Board) and a bracket assembly arranged in the shell, and the bracket assembly comprises a lower bracket, an upper bracket and a mounting seat arranged at the lower end of the upper bracket; the lower end of the mounting seat is fixedly mounted with the lower support, a cavity is formed in the mounting seat, the mounting seat is made of polytetrafluoroethylene, a containing groove is formed in the edge of the lower end face of the mounting seat, the shape of the containing groove is matched with that of the heating assembly, and the lower side of the containing groove and the lower support form an insertion groove for insertion of test paper. And the upper bracket is detachably connected with the mounting seat. The detection device has the advantages of low energy consumption, good thermal insulation performance, wide adaptive range and the like.

The invention discloses a non-contact laser explosive detection method. The method comprises the following steps: generating a stable infrared radiation light source; performing secondary beam expansion on the infrared radiation light source to obtain uniform and stable laser spots; acquiring an infrared thermal image of the detected explosive based on the laser spot, and synchronously acquiring a visible light image of the detected explosive; and matching the infrared thermal image and the visible light image to form an infrared thermal image scene graph, and identifying and analyzing the infrared thermal image scene graph based on a deep convolutional neural network. According to the invention, the temperature difference characteristics of the detected explosive are extracted through the fusion identification technology of the infrared image and the visible light image, so that non-contact, rapid and safe explosive detection is realized, and the actual combat requirements of explosive detection are met.

The invention discloses a non-contact laser imaging system for explosive detection, which is characterized in that the system detects a detected explosive through an infrared imaging subsystem to obtain an infrared image; collecting visible light images of detected explosives at the same position through a visible light imaging subsystem; the image fusion and recognition module is used for synchronizing image acquisition and preprocessing of the double imaging subsystems, and then image fusion and recognition are carried out. According to the method, the temperature effect characteristic caused by the fact that the explosive absorbs infrared laser is utilized, an infrared imaging system and a visible light imaging system are adopted to detect the image of a detected sample at the same time, and the temperature difference characteristic of the detected explosive is extracted through the fusion recognition technology of the infrared image and the visible light image; therefore, non-contact, rapid and safe explosive detection is realized, and explosive detection actual combat requirements are met.

The invention relates to the technical field of explosive detection, and discloses a carbon nanodot fluorescent waveguide and a preparation method and application thereof. The method comprises the following steps: (1) activating the waveguide; (2) treating the waveguide obtained in the step (1) with amino silane to obtain an amino-modified waveguide; (3) treating the amino-modified waveguide with acyl chloride to obtain an acyl chloride-modified waveguide; and (4) carrying out pretreatment on carbon nanodots, and loading the pretreated carbon nanodots onto the acyl chloride modified waveguide to obtain the carbon nanodot fluorescent waveguide. According to the carbon nanodot fluorescent waveguide prepared by the method disclosed by the invention, the carbon nanodots can be stably attached to the waveguide, and accurate detection of nitro explosives is realized.

Scent sample for conditioning and training self-laboratory preparations (HME) such as TATP and HMTD for explosive detection dogs (SSH)

The present invention relates to the field of terahertz imaging detection technology, and discloses an explosive detection method and system based on a terahertz imaging security scanner, including using a security scanner based on terahertz imaging technology to perform security scans on people passing through the security scanner, identifying the spectrum absorbed and reflected by the target person's belongings in the terahertz frequency band, and constructing spectrum data and image data; matching the spectrum data of the target item with the data associated with explosives in the terahertz fingerprint library, and comparing the matching degree between the detected target item and the terahertz fingerprint library data and the explosive determination threshold. In view of the situation where explosives are wrapped with materials that absorb terahertz waves, the present invention can dynamically adjust the detection parameters of the system, reduce the probability of missed detection caused by covering materials, and improve the detection capability of complex wrapped objects. Even if the matching degree of the target item is lower than the explosive determination threshold during the first detection, the secondary determination mechanism allows further analysis of items close to the threshold.

The utility model provides an explosion searching helmet, and belongs to the technical field of protective equipment. The explosion searching helmet comprises a helmet body, a fixing structure and a camera, wherein a mask is rotationally connected to the helmet body; the fixing structure comprises a fixing block and a spring buckle, the fixing block is fixedly connected to the upper side edge of the mask, and an inserting groove is formed in the fixing block; the spring buckle comprises an inserting part, a connecting part and a mounting part which are connected in sequence, the inserting part and the mounting part are oppositely arranged, the inserting part is inserted into the inserting groove, and the mounting part is located above the fixing block; and the camera is mounted on the mounting part. According to the explosion searching helmet, the inserting groove is formed in the fixing block, the inserting part of the spring buckle is inserted into the inserting groove, assembling and fixing of the spring buckle and the fixing block are achieved, when the explosion searching helmet is used, the camera is always located right in front of the helmet body, the right in front of an explosion searching person is shot, and the influence of adjustment of the illumination angle of the illumination lamp on the camera is avoided; and normal shooting of an explosion searching site is ensured.

The invention discloses a TNT explosive detection method, and belongs to the technical field of explosive detection. The method comprises the following three parts: a first part of primer is reserved, a probe DNA 1 containing a TNT nucleic acid aptamer can be prevented from being degraded by exonuclease I after being combined with TNT, and the probe DNA 1 which is not combined with TNT is degraded by exonuclease I; the second part is circular amplification, the probe DNA 1 reserved in the previous step opens the DNA of the hairpin stem-loop structure, and the generation of circular amplification reaction with the DNA of the hairpin stem-loop structure as a template is promoted; in the third part, naked eye visual detection and / or ultraviolet spectrophotometry detection are / is carried out according to the G-quadruplex contained in the cyclic amplification product. The detection method provided by the invention is sensitive and high in visualization degree, in-situ detection of the TNT explosive can be realized, and the detection limit reaches the concentration level of pmol / L.

Aiming at the current situation of DNT detection in a high-salt environment in the prior art, the invention firstly provides a promoter mutant yqjFas for explosive detection in the high-salt environment; the nucleotide sequence of the mutant yqjFas is as shown in SEQ ID NO: 1. And the explosive is 2, 4-dinitrotoluene. The inventor finds that the mutant yqjFas can sense trace DNT under the condition of high-concentration salt content (5-7wt% NaCl), and unexpected technical effects are achieved. On the basis, the invention also provides a biosensor which has salt tolerance and can sense trace explosives, the biosensor adopts GFP, YFP or DsRed as a downstream reporter gene, direct observation can be realized without adding auxiliary factors, and the operation is simple and convenient. The invention further provides a method for rapidly detecting explosives by adopting the biosensor, the technical blank of detecting the explosives in the high-salt environment is filled, and the biosensor has important practical application value.

1. The name of the design product: strike type four-legged machine wolf (A type). 2. The use of the design product: for environmental patrol investigation, police explosive detection, medical and epidemic prevention escort, scientific research and education, disaster rescue and armed attack, etc. Special operation tasks. 3. The design points of the design product: in shape. 4. The picture or photo that can best show the design points: perspective view 1.

1. The name of the design product: safeguarding four-legged robot wolf. 2. The use of the design product: for special operation tasks such as military safeguard, environmental patrol and investigation, police explosive detection, medical quarantine escort, scientific research and education, and disaster rescue. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The invention discloses an AI decision tree data management system and method for explosive spectrum identification, and relates to the technical field of explosive detection, and the method comprises the steps: collecting an explosive sample, extracting a spectrum feature vector of the explosive sample, setting the composition of an AB-MCTS decision tree, and setting the initial state of a root node of the AB-MCTS decision tree, selecting a node extension optimal path from a root node until the path is extended to a leaf node, completing the construction of an AB-MCTS decision tree, carrying out the explosive spectrum recognition through the constructed and pruned decision tree, collecting historical target detection task data, generating a pruning automation model training sample, and carrying out the detection of the explosive spectrum. According to the method, the pruning automation model for the decision tree is established, the parameters in the current target detection task are collected, the parameters are input into the pruning automation model, and the optimal pruning intensity executed on the decision tree in the current target detection task is set, so that the applicability of the decision tree in different scenes is improved.

1. The name of the design product: reconnaissance type four-legged machine wolf. 2. The use of the design product: for environmental patrol reconnaissance, police explosive detection, medical and epidemic prevention escort, scientific research and education, disaster rescue and armed attack special operation tasks. 3. The design points of the design product: in shape. 4. The picture or photo that can best show the design points: perspective view 1.

The application belongs to the technical field of explosive detection, and particularly relates to a shallow-buried explosive detection method and system based on multi-modal fusion, comprising a magnetic signal acquisition unit, an acoustic signal acquisition unit, a processing unit and an output unit. The method and system have the advantages that by combining magnetic anomaly detection and acoustic wave excitation response analysis, the method and system realize multi-modal signal synchronous acquisition, feature extraction and fusion discrimination under a unified time framework, so as to improve the recognition stability of shallow-buried explosives under complex environmental conditions.

The present invention relates to the field of explosives detection technology, and more specifically to a system for rapidly detecting aqueous solutions and water content of latex explosives. The system comprises a refractive index detection module, a near-infrared spectroscopy detection module, a production line monitoring module, a data processing module, and a data fusion module. The refractive index detection module is used to collect the refractive index of the aqueous solution, the near-infrared spectroscopy detection module is used to collect the water content of the aqueous solution, and the production line monitoring module is used to collect process parameters. By calculating comprehensive indicators of the aqueous solution, the present invention effectively resolves the interference that may arise between water content, solute concentration, and process parameter changes, making parameter control in the production process more precise. By comparing the comprehensive indicators with indicator thresholds, it is possible to determine whether the production process of the latex explosives deviates from the target range, helping the system to promptly detect production anomalies and prevent accidents or quality problems caused by process fluctuations.

To provide an explosives detection system and an explosives detection method capable of detecting TNT explosives buried underground while reducing the risk of personal injury to searchers. [Solution] The explosives detection system 1 is a drone device 2, which includes an unmanned aerial vehicle (drone 6), a tank 7 attached to the drone, a spraying device 8 that sprays a surfactant, a suction device 22 attached to the drone 6 that sucks air, an adsorption column 24 that collects gaseous components generated from TNT explosives, a desorption device 26 that desorbs the components adsorbed in the adsorption column, and a gas chromatograph 28 that detects gaseous components generated from TNT explosives from the components desorbed by the desorption device 26. The drone 6 can be controlled by a control unit 60 to fly to a predetermined position, altitude, and course, and take off and land fully automatically according to a predetermined program.

The invention relates to the technical field of explosive detection, in particular to an underground metal explosive detection method and system based on a transmitting-receiving double-end unmanned aerial vehicle, and the method comprises the steps: a transmitting-end unmanned aerial vehicle transmits a broadband signal, and a receiving-end unmanned aerial vehicle receives the signal; a channel impulse response is obtained by processing a signal, and effective multipath taps are screened based on a power delay spectrum; aiming at each effective tap, constructing a geometric propagation path model containing air-earth refraction and underground explosive reflection, establishing and solving a path equation by taking minimum propagation time delay as a principle, solving three-dimensional position coordinates of the explosives in a global coordinate system, mapping the three-dimensional position coordinates to corresponding grids, and counting occupancy, and when the counting of a certain grid exceeds a preset threshold value, the explosive exists at the position. The high maneuverability of the unmanned aerial vehicle platform and the high resolution of broadband signals are utilized, and non-contact detection of underground explosives is realized through transmitting and receiving separate cooperative detection and occupation counting statistics, so that the detection precision and reliability are effectively improved.