WO2022052426A1 - Device and method for security check - Google Patents

Abstract

A device and method for security check. The device comprises: a conveying component (1), a security check machine (2), and a trace substance detection component (3). The security check machine (2) comprises a conveying device (2-1), a security check chamber (2-2), and a computing center (2-3). The trace substance detection component (3) is arranged in a gap provided on an object conveying channel consisting of the conveying component (1) and the conveying device (2-1).

Description

Security check device and method

The present disclosure claims the priority of a Chinese patent application with application number 202010944009.3 filed with the China Patent Office on September 10, 2020, the entire contents of which are incorporated into the present disclosure by reference.

technical field

The present disclosure relates to the technical field of safety inspection of dangerous goods, for example, to a safety inspection device and method.

Background technique

With the development of the national economy and changes in lifestyles, the number of express parcels in my country has grown rapidly. If there are contraband in the mailed items, it will seriously threaten the safety and stability of the society and the postal express industry. As the most widely used contraband detection technology, X-ray security inspection mainly determines the type of items by the shape of the scanned image, which has the advantages of wide application range and high detection efficiency. However, for powder crystals or solid explosives, as well as drugs, highly poisonous and other items that are easy to hide, it cannot be easily identified by shape. Although the high and low energy of X-rays can distinguish organic substances, inorganic substances and mixtures, these three classifications cover the scope of It is relatively broad and cannot make fine distinctions. For example, it is impossible to effectively distinguish between drugs and flour, explosives and cosmetics through security inspection machines in related technologies.

The detection of powdered crystals or solid explosives, as well as dangerous substances such as narcotics and highly narcotics, by related technologies either requires a large number of samples to achieve analytical results, or requires non-contact vacuum sampling or wiping sampling, using trace amounts of Detection technology for detection and analysis. The trace detection technology uses the traces left by explosives and drugs in the process of processing, extracts object particles or traces from the object for analysis, and conducts accurate characteristic detection through the physical and chemical characteristics of the detected substance, with high sensitivity and accurate detection. It is suitable for the detection of contraband such as drugs and explosives in people's daily production activities. However, in the related art, manual sampling is still the main method, and the detection efficiency is low, which cannot meet the explosive detection requirements of non-invasive express parcels. Especially in the high-speed automatic sorting system, the trace detection equipment in the related technology is useless.

Therefore, it is of great significance to ensure national security and social stability how to quickly and non-destructively detect suspicious contrabands in sports, such as explosives, drugs, and highly narcotics, on the premise of ensuring human safety.

SUMMARY OF THE INVENTION

The present disclosure provides a security inspection device, which can quickly and efficiently detect and locate explosives and highly toxic substances in express parcels.

The present disclosure also provides a security check method using the above security check device.

A security inspection device provided by the present disclosure includes a conveying component, a security inspection machine and a trace substance detection component;

The security inspection machine includes a conveying device, a security inspection cavity and a computing center;

The trace substance detection assembly is located in a gap provided on the article conveying channel formed by the conveying assembly and the conveying device, and the trace substance detection assembly includes a trace substance detection device configured for wiping sampling;

The trace substance detection device includes a wipe sampling point and a data processing and control module;

The wiping sampling point includes a test paper, a detection sensor, and a detection body, and the security inspection device further includes a support;

The test paper is in the shape of a strip, and the test paper is fixed on the two stepping motor output shafts on the detection body in a coiled manner, and the support member supports all the middle of the two stepping motor output shafts. The test paper is exposed to the gap provided on the article conveying channel.

The present disclosure also provides a security inspection method using the above security inspection device, including:

The object to be inspected passes through the X-ray security inspection channel of the security inspection machine, and an X-ray image of the object to be inspected is obtained;

The to-be-detected item passes through the trace-substance detection component to obtain trace-substance detection data of the to-be-detected item;

respectively analyzing the X-ray image and the trace substance detection data to obtain a detection result;

The detection result is output.

Description of drawings

FIG. 1 is a schematic diagram of the security inspection device of the present disclosure.

FIG. 2 is a schematic diagram of a trace substance detection component in the security inspection device of the present disclosure.

FIG. 3 is a schematic diagram of a wiping sampling point in the security inspection device of the present disclosure.

detailed description

The following describes in detail the embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions. The embodiments described below by referring to the figures are exemplary for explaining the present disclosure.

In the description of the present disclosure, it should be understood that if the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical" , "horizontal", "top", "bottom", "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of describing the present disclosure and simplifying the description, It is not indicated or implied that the referred device or element must have a particular orientation, or must be constructed and operated in a particular orientation.

In the description of the present disclosure, "plurality" means two or more, unless expressly and specifically defined otherwise. In the present disclosure, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be construed in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of the two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the meanings of the above terms in the present disclosure can be understood according to the situation.

As shown in FIG. 1 , a security inspection device provided in an embodiment of the present disclosure includes: a conveying assembly 1 , a security inspection machine 2 and a trace substance detection assembly 3 .

The security inspection machine 2 includes a conveying device 2-1, a security inspection cavity 2-2 and an operation center 2-3. The conveying device 2-1 transports the items to be inspected through the security inspection cavity, and the security inspection cavity is provided with an X-ray generating device, a detector, etc., The X-ray image of the item is obtained by transmission imaging technology, and then the intelligent image discrimination module on the operation center 2-3 judges the type of the item and identifies the contraband according to the X-ray imaging features such as the shape in the image.

In this embodiment, the conveying assembly 1 and the conveying device 2-1 of the security inspection machine 2 are both belt conveyors, including a motor, an electric roller, a belt, a reversing roller, and a deflection roller. The belt conveyor can be driven forward and reverse by the motor. In the working state, the belt conveyor of the above-mentioned conveying assembly 1 and the belt conveyor 2-1 of the conveying device of the security inspection machine 2 have the same conveying direction.

In this embodiment, the trace substance detection component 3 is located in the gap between the conveying component 1 and the conveying device 2 - 1 of the security inspection machine 2 , and this gap also serves as the wiping channel of the trace substance detection component 3 . Optionally, 5mm≤width of wiping channel≤200mm. The conveying assembly 1, the trace material detection assembly 3, and the conveying device 2-1 of the security inspection machine 2 are sequentially supported end to end but are spliced independently of each other, and the upper planes of the conveying assembly 1, the trace material detection assembly 3, and the security inspection machine 2 are in the same position. On the same level, it is conducive to the smooth passage of express delivery, parcels, products, etc. The trace substance detection assembly is composed of one or more trace substance detection devices 4 for wiping sampling (referred to as "wipe detection device"), and the wipe detection device may include one or more wiping sampling points 5 .

When the trace substance detection assembly can be provided with a conveying structure that is consistent with the conveying direction of the conveying assembly or the conveying device of the security inspection machine, this part can be regarded as a part of the conveying assembly.

In this embodiment, as shown in FIG. 2 , the trace substance detection assembly 3 includes seven wiping detection devices 4 arranged side by side along the 80 mm gap between the conveying device 2-1 and the conveying assembly 1. The wiping detection device 4 includes 3 5 wiping sampling points arranged side by side and 1 data processing and control module, each wiping sampling point includes test paper, detection sensor, and detection body. The data processing and control module is used to receive and analyze the detection data of the above-mentioned wiping sampling points, and then transmit the analysis results of the detection data to the security inspection machine computing center 2-3, and carry out the detection of the detection sensors on the wiping sampling points and the update of the test paper. Work assignments. The detection sensor can be selected from sensors based on fluorescence spectroscopy, ion mobility, Raman spectroscopy, mass spectrometry, biosensing technology, MEMS sensing technology, and the like. Typically, the analytical results of the detection data at the swab sampling point include information on the identity and/or confidence level of the trace species. In one embodiment, the computing center will also display a warning prompt when it is determined that the substance is a prohibited substance through the analysis result of the detection data of the wiping sampling point. The X-ray security inspection data uses the intelligent algorithm on the computing center to detect and identify the target, and the identification result outputs information including the category and/or confidence of the prohibited item. In one embodiment, the computing center uses a deep learning-based target detection algorithm to identify contraband. The computing center also fuses X-ray security inspection data with wipe trace detection data for further analysis to improve the identification accuracy of contraband and/or prohibited substances such as explosives, drugs, and/or explosives.

The wiping detection devices 4 are arranged in an array, and a plurality of them are arranged along the vertical direction of the conveying direction of the articles to ensure that the articles can be wiped and sampled no matter where the belt passes. The number and arrangement of the wiping detection devices 4 are set according to actual scene requirements, which may be a single-column arrangement as shown in the figure, or a discrete multi-column arrangement. The wiping detection device 4 is composed of a plurality of wiping sampling points 5 so that the wiping sampling can be continuously operated. Because it takes several seconds for each swab sampling point to detect after sampling, sampling cannot be performed during this time. In order to ensure continuous operation, multiple swab sampling points are set as a unit group, and each swab sampling point is in The data processing and control module work in turn under the control of the control module to ensure the continuity of detection. The number and arrangement of the wiping sampling points 5 in the wiping detection device 4 are set according to the actual situation, and may be arranged in a single row as shown in the figure, or may be arranged in multiple rows.

As shown in FIG. 3 , the security inspection device further includes a support. In the wiping sampling point, the test paper is in the shape of a strip, which is fixed by the support and exposed to the gap between the conveying assembly 1 and the conveying device 2-1 of the security inspection machine 2. The test paper is not lower than the conveying plane of the conveying assembly, and the height of the test paper above the conveying plane is ≤10 mm, which is 1 mm in this embodiment. The two ends of the test paper are fixed on the output shafts of the two stepping motors on the detection body by means of rolls. Among the two stepping motor output shafts, one is used as a feeding shaft and the other is used as a pulling shaft. The support supports the test paper between the feeding shaft and the pulling shaft, and the three are taut to make the test paper in a tension state. The test paper that has not been wiped is rolled on the feeding shaft at one end. During operation, the two stepper motors are linked by the control of the data processing and control module, and play the role of tensioning, initial winding and conveying the sampling test paper. The sample test paper is rolled on the pull shaft at the other end. The conveying direction of the test strip can optionally be the same as or opposite to the conveying direction of the article, that is, the conveying component.

In one embodiment, the support is provided on the detection body in the wipe sampling site.

In one embodiment, the conveying direction of the test strip and the conveying direction of the article form a certain angle with the direction of the conveying assembly.

The detection sensor detects the test paper of the wiped object, and obtains the detection data of trace substances on the test paper of the wiped object. The position setting of the sensor is adjusted according to the type of the sensor and needs, for example, it can be the in-situ detection of the wipe point or the wipe After the test paper is rolled forward for a certain distance, the test is carried out. Usually, every time the item passes through the trace substance detection component, the test paper in contact with the item is assigned the detection task by the data transmission and control module, and the test paper of the remaining swab sampling points needs to be updated to prevent the swab sampling points there from being contaminated. The test strip enters the subsequent test procedure, which interferes with the test results.

In this embodiment, a trigger sensor for triggering the operation of each part of the trace substance detection component is optionally provided.

Taking the security inspection of express parcels as an example, in this embodiment, the express parcels are first moved along the conveying direction by the belt conveyor 2-1 of the security inspection machine 2 to obtain the security inspection X-ray images of the express parcels and the items in the express parcels, and then swabbed and sampled. The device 3 reaches the transport assembly 1 . In practical applications, the express package can first pass through the security inspection machine and then the trace substance detection component, and the express package can also pass through the trace substance detection component and then through the security inspection machine.

The terminology used herein is only used to describe the various embodiments. It will also be understood that the terms "comprising" and/or "having" when used in this specification designate the presence of stated features, numbers, steps, operations, components, elements or combinations thereof, without excluding one or more other features , number, step, operation, component, element, or the presence or addition of a group thereof.

Terms used herein including technical and scientific terms have the same meanings as those commonly understood by those skilled in the art. It should be understood that terms defined in commonly used dictionaries have meanings consistent with the meanings of terms in the related art.

Optionally, the gap set on the article conveying channel composed of the conveying assembly and the conveying device of the security inspection machine may be the gap between the conveying assembly and the conveying device of the security inspection machine, or the gap between the conveying assembly and the conveying assembly, It can also be a gap set on the conveying channel or the conveying device of the security inspection machine.

Optionally, the slit is used as a wiping channel of the trace substance detection component, and 5 mm≤the width of the wiping channel (ie, the width of the slit)≤200 mm.

Optionally, the trace substance detection component is located between the conveying components or in the gap between the conveying component and the security inspection machine.

Optionally, the trace substance detection assembly is composed of one or more swab sampling trace substance detection devices, and the swab sampling trace substance detection device may include one or more swab sampling points and a data processing and control module. When there are multiple trace substance detection devices and wiping sampling points for wiping sampling, they are arranged in an array.

Optionally, the wiping sampling point includes a test paper, a detection sensor, and a detection body.

Optionally, the test paper is in the shape of a strip, and is fixed on the two stepper motor output shafts on the detection body in a coiled manner, the support member supports the test paper in the middle of the two stepper motor output shafts, and the test paper passes through the support member. Exposed to the gap between the conveying assembly and the conveying device of the security inspection machine. The test paper is not lower than the conveying plane of the conveying assembly and the height above the conveying plane is less than or equal to 10 mm.

Optionally, the detection sensor is selected from sensors based on fluorescence spectroscopy technology, ion mobility technology, Raman spectroscopy technology, mass spectrometry and biosensing technology, MEMS sensing technology and the like.

The present application also provides a security inspection method using the above-mentioned security inspection device, including:

Obtaining an image: The object to be inspected passes through the X-ray security inspection channel of the security inspection machine, and the X-ray image of the object to be inspected is obtained;

Obtaining trace substances: the object to be tested passes the trace substance detection component to obtain the trace substance detection data of the object to be tested;

Detection and identification: respectively analyze the X-ray image and trace substance detection data to obtain detection results;

Output the result.

Optionally, the trace substances are one or more of prohibited substances such as explosives, drugs, and highly toxic substances. A single X-ray security inspection technology cannot accurately identify substances, so the present disclosure combines X-ray technology with trace detection technology, so that the security inspection machine described in this disclosure can better detect explosives, drugs and/or highly toxic substances The detection of contraband and other contrabands overcomes the shortcomings of the trace detection technology in the related art that the manual sampling one by one cannot be directly combined with the X-ray security inspection machine to achieve online detection. Through the arrangement of the wipe detection device and the wipe sampling point array, the articles can be detected no matter where they pass through the conveying device, so as to realize continuous, comprehensive and uninterrupted online wipe detection on the assembly line.

In addition, using the method and system of the present disclosure is low in cost, and in the related art, on the basis of production materials such as security inspection equipment and personnel, it is only necessary to add the trace detection instruments and equipment for continuous collection proposed in the present disclosure, which greatly saves costs and also It meets the needs of comprehensive, accurate and efficient security inspection of contraband that endanger the safety and interests of the masses, enterprises and society in social production and life.

Claims (9)

1. A security inspection device, comprising a conveying component, a security inspection machine and a trace substance detection component;

   The security inspection machine includes a conveying device, a security inspection cavity and a computing center;

   The trace substance detection assembly is located in a gap provided on the article conveying channel formed by the conveying assembly and the conveying device, and the trace substance detection assembly includes a trace substance detection device configured for wiping sampling;

   The trace substance detection device includes a wipe sampling point and a data processing and control module;

   The wiping sampling point includes a test paper, a detection sensor, and a detection body, and the security inspection device further includes a support;

   The test paper is in the shape of a strip, and the test paper is fixed on the two stepping motor output shafts on the detection body in a coiled manner, and the support member supports all the middle of the two stepping motor output shafts. The test paper is exposed to the gap provided on the article conveying channel.
2. The security inspection device according to claim 1, wherein the gap provided on the article conveying channel comprises a gap between the conveying assembly and the conveying device, a gap provided on the conveying assembly, and the conveying device at least one of the slits set on the above.
3. The security inspection device according to claim 1 or 2, wherein 5mm≤the width of the slit≤200mm.
4. The security inspection device according to claim 1, wherein the test paper is not lower than the conveying plane, and the height of the test paper above the conveying plane is less than or equal to 10 mm.
5. The security inspection device according to claim 1, wherein the detection sensor comprises a sensor based on fluorescence spectroscopy, a sensor based on ion migration technology, a sensor based on Raman spectroscopy, a sensor based on mass spectrometry and biosensing technology, At least one of the sensors based on MEMS sensing technology.
6. The security inspection device according to claim 1, wherein a plurality of the trace substance detection devices are provided, and the plurality of trace substance detection devices are arranged in an array.
7. The security inspection device according to claim 1 or 6, wherein a plurality of the wiping sampling points are provided, and the plurality of wiping sampling points are arranged in an array.
8. The security inspection device of claim 1, wherein the support is provided on the inspection body in the wipe sampling point.
9. A security check method, using the security check device according to any one of claims 1-8, comprising:

   The object to be inspected passes through the X-ray security inspection channel of the security inspection machine, and an X-ray image of the object to be inspected is obtained;

   The to-be-detected item passes through the trace-substance detection component to obtain trace-substance detection data of the to-be-detected item;

   respectively analyzing the X-ray image and the trace substance detection data to obtain a detection result;

   The detection result is output.

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