GB2613476A

GB2613476A - Device and method for security check

Info

Publication number: GB2613476A
Application number: GB2300493.0A
Authority: GB
Inventors: Cheng Guohua; Wen Ting
Original assignee: Zhejiang Peckerai Tech Co Ltd
Current assignee: Zhejiang Peckerai Tech Co Ltd
Priority date: 2020-09-10
Filing date: 2021-03-01
Publication date: 2023-06-07
Also published as: GB202300493D0; CN111929334A; CN111929334B; WO2022052426A1

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

DEVICE AND METHOD FOR SECURITY CHECK

This application claims priority to Chinese Patent Application No. 202010944009.3 filed with the China National Intellectual Property Administration (CNIPA) on Sep. 10, 2020, the disclosure of which is incorporated herein by reference in its entirety.

TECHNICAL FIELD

The present disclosure relates to the technical field of dangerous good security detection, for example, a security check apparatus and method.

BACKGROUND

With the development of national economy and the change of life style, the quantity of express parcels in our country grows rapidly. If contraband exists in mailed items, the safety and stability of the society and the postal express industry will be seriously threatened. As the most widely used contraband detection technology, X-ray security check mainly distinguishes the type of an item through the shape after perspective imaging and scanning, and has the advantages of wide application range and high detection efficiency. However, it is impossible to easily distinguish concealed items such as powder crystals or solid explosives, drugs, and highly toxic substances through shapes. Although the high and low energy of X-rays can distinguish organic compounds, inorganic compounds, and mixtures, these three categories cover a wide range, and fine distinctions cannot be made. For example, it is impossible to effectively distinguish drugs from flour, and explosives and cosmetics by a security check machine in the related art.

In the related art, during detection of dangerous goods such as powder crystals or solid explosives, drugs, and highly toxic substances, a large number of samples are required to achieve the analysis of detection results, alternatively, non-contact vacuum sampling or wipe sampling are conducted to perform detection and analysis by using trace detection technology.

The trace detection technology uses traces left during processing of explosives and drugs, extracts item particles or traces from an item for analysis, and performs accurate characteristic detection through physicochemical characteristics of a detected substance. Therefore, the trace detection technology has advantages of high sensitivity and accurate detection, and is suitable for detection of contraband such as drugs and explosives in daily production activities of people.

However, manual sampling one by one is still the main method in the related art, and the detection efficiency is low, which cannot meet the explosive detection requirements of non-invasive express parcels. Especially in a high-speed automatic sorting system, a trace detection device in the related art becomes useless.

Therefore, it is of great significance to ensure national safety and social stability that how to quickly and non-destructively detect suspicious contraband in motion, such as explosives, drugs, and highly toxic substances on the premise of ensuring human body safety.

SUMMARY

The present disclosure provides a security check apparatus that can quickly and efficiently detect and position explosives and highly toxic substances in express parcels.

The present disclosure further provides a security check method using the preceding security check apparatus The present disclosure provides the security check apparatus including a conveying assembly, a security check machine, and a trace substance detection assembly.

The security check machine includes a conveying apparatus, a security check chamber, and an operation center.

The trace substance detection assembly is located in a gap disposed on the item conveying channel composed of the conveying assembly and the conveying apparatus. The trace substance detection assembly includes a trace substance detection apparatus configured for wipe sampling.

The trace substance detection apparatus includes a wipe sampling point and a data processing and control module.

The wipe sampling point includes a test paper, a detection sensor, and a detection body. The security check apparatus further includes a support member.

The test paper is in a shape of a band. The test paper is secured on motor output shafts of two stepper motors on the detection body in a coil form. The support member is configured to support the test paper between the output shafts of the two stepper motors. The test paper is exposed to the gap disposed on the item conveying channel.

The present disclosure further provides the security check method using the preceding security check apparatus. The method includes: obtaining the X-ray image of an item to be detected after the item to be detected passes through the X-ray security check channel of the security check machine; obtaining the detection data of the trace substance of the item to be detected after the item to be detected passes through the trace substance detection assembly; separately analyzing the X-ray image and the detection data of the trace substance to obtain a detection result; and outputting the detection result.

BRIEF DESCRIPTION OF DRAWINGS

FIG is a diagram of a security check apparatus according to the present disclosure FIG. 2 is a diagram of a trace substance detection assembly in a security check apparatus

according to the present disclosure.

FIG 3 is a diagram of a wipe sampling point in a security check apparatus according to the present disclosure.

DETAILED DESCRIPTION

The embodiments of the present disclosure are described in detail below, and examples of the embodiments are illustrated in the drawings, where the same or similar reference numerals indicate the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are exemplary to explain the present disclosure In the description of the present disclosure, it is to be understood that the orientations or position relations indicated by terms such as "length", "width", "above", "below", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside"; and the like are based on orientations or position relations shown in the drawings. These orientations or position relations are intended only to facilitate and simplify description of the present disclosure, and not to indicate or imply that an apparatus or element referred to must have such specific orientations or must be configured or operated in such specific orientations.

In the description of the present disclosure, the term "multiple" is defined as two or more unless otherwise expressly limited. In the present disclosure, unless otherwise expressly specified and limited, the term "installed", "connected to each other", "connected", or "secured" is to be constmed in a broad sense, for example, as securely connected, detachably connected, or integrated; mechanically connected or electrically connected; directly connected to each other or indirectly connected to each other via an intermediary; or internally connected between two elements or interactional relations between two elements. For those of ordinary skill in the art, meanings of the preceding terms can be understood according to situations in the present

disclosure.

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

The security check machine 2 includes a conveying apparatus 2-1, a security check chamber 2-2, and an operation center 2-3. The conveying apparatus 2-1 conveys an item to be checked through the security check chamber. An X-ray generator, a detector, and the like are disposed in the security check chamber. The X-ray image of the item is obtained by the transmission imaging technique. Then, the X-ray imaging features such as the shape in the image are used by an intelligent image distinction module on the operation center 2-3 to recognize the type of the item and identify contraband.

In this embodiment, the conveying assembly 1 and the conveying apparatus 21 of the security check machine 2 are each a belt conveyor. The belt conveyor includes a motor, a motorized pulley, a belt, a bend pulley, and an adjustment pulley. The belt conveyor can rotate forward and reversely under the drive of the motor. In the working state, the belt conveyor of the conveying assembly 1 and the belt conveyor of the conveying apparatus 2-1 of the security check machine 2 have the same conveying direction.

In this embodiment, the trace substance detection assembly 3 is located in a gap between the conveying assembly 1 and the conveying apparatus 2-1 of the security check machine 2. This gap serves as the wipe channel of the trace substance detection assembly 3. Optionally, 5 mm < the width of the wipe channel < 200 mm. The conveying assembly 1, the trace substance detection assembly 3, and the conveying apparatus 2-1 of the security check machine 2 are connected in sequence from end to end, but are spliced independently of each other. The upper planes of the conveying assembly 1, the trace substance detection assembly 3, and the security check machine 2 are on the same horizontal plane to facilitate the smooth passage of express delivery, parcels, products, and the like. The trace substance detection assembly is composed of one or more trace substance detection apparatuses 4 (referred to as "wipe detection apparatuses") for wipe sampling. A wipe detection apparatus may include one or more wipe sampling points 5.

When the trace substance detection assembly may be provided with a conveying structure whose conveying direction is consistent with the conveying direction of the conveying assembly or the conveying direction of the conveying apparatus of the security check machine, this part may be regarded as part of the conveying assembly.

In this embodiment, as shown in FIG. 2, the trace substance detection assembly 3 includes seven wipe detection apparatuses 4 arranged side by side along a gap of 80 mm between the conveying apparatus 2-1 and the conveying assembly 1. A wipe detection apparatus 4 includes three wipe sampling points 5 arranged side by side and one data processing and control module.

Each wipe sampling point includes a test paper, a detection sensor, and a detection body The data processing and control module is configured to receive and analyze the detection data of the preceding wipe sampling points, then convey the analysis result of the detection data to the operation center 2-3 of the security check machine, and perform work task distribution on the detection of detection sensors of wipe sampling points and the update of test papers. The detection sensor may be selected from sensors based on fluorescence spectroscopy technology, ionic migration technology, Raman spectroscopy technology, mass spectrometry and biosensing technologies, MEMS sensing technology, and the like. Typically, the analysis result of the detection data of wipe sampling points includes information on the type and/or confidence level of a trace substance. In an embodiment, when a contraband substance is determined through the analysis result of the detection data of wipe sampling points, the operation center displays a warning prompt. The X-ray security check data uses an intelligent algorithm on the operation center to perform target detection and recognition. The recognition result outputs information including the type and/or confidence level of contraband. In an embodiment, the operation center performs the recognition of contraband for the target detection algorithm based on deep learning. The operation center may further analyze the X-ray security check data in combination with wipe trace detection data to improve the recognition accuracy of contraband and/or contraband substances such as explosives, drugs, and/or explosive materials.

The wipe detection apparatuses 4 are disposed in an array. Multiple wipe detection apparatuses 4 are arranged along the direction perpendicular to the conveying direction of an item, to ensure that the item can be wiped and sampled no matter where the item is on the belt. The number and arrangement of the wipe detection apparatuses 4 are arranged according to actual scenario requirements. The arrangement of the wipe detection apparatuses 4 may be a single-column arrangement as shown in FIG. 2, or a discrete multi-column arrangement. A wipe detection apparatus 4 is composed of multiple wipe sampling points 5 so that wipe sampling can operate continuously. Since it takes several seconds for wipe sampling points to be detected after each sampling, sampling cannot be performed during this period. To ensure continuous operation, multiple wipe sampling points are arranged as a unit group. Wipe sampling points work in turn under the control of the data processing and control module to ensure the continuity of the detection. The number and arrangement of wipe sampling points 5 in a wipe detection apparatus 4 are arranged according to actual scenario requirements. The arrangement of the wipe sampling points 5 may be a single-column arrangement as shown in FIG. 2, or a multi-column arrangement.

As shown in FIG. 3, the security check apparatus further includes a support member. In a wipe sampling point, the test paper is in a shape of a band. The test paper is secured by the support member, and exposed to the gap between the conveying assembly 1 and the conveying apparatus 21 of the security check machine 2. The test paper is not lower than the conveying plane of the conveying assembly, and the height of the test paper higher than the conveying plane < 10 mm. In this embodiment, the height of the test paper higher than the conveying plane is I mm. The two ends of the test paper are respectively secured on output shafts of two stepper motors on the detection body in a coil form. Among the output shafts of the two stepper motors, one serves as a feed shaft, and another serves as a puller shaft The support member supports the test paper between the feed shaft and the puller shaft. The three are tensioned to make the test paper in a tension state. The unwiped test paper is rolled on the feed shaft at one end. When working, the two stepper motors are controlled by the data processing and control module to produce a linkage between the two stepper motors, so as to tense, initially wind, and convey the sampling test paper, and roll the wiped sampling test paper on the puller shaft at another end.

Optionally, the conveying direction of the test paper is consistent with or opposite to the conveying direction of an item, that is, the direction of the conveying assembly.

In an embodiment, the support member is disposed on the detection body in a wipe sampling point.

In an embodiment, the conveying direction of the test paper is at an angle from the conveying direction of an item, that is, the direction of the conveying assembly.

The detection sensor detects the test paper which has wiped an item, in order to obtain the detection data of the trace substance on the test paper which has wiped an item. The position of the sensor is adjusted according to the type of the sensor and needs. For example, the detection may be performed at the situ position of the wipe point or performed after the test paper which has wiped is rolled forward for a certain distance. In general, every time an item passes through the trace substance detection assembly, the test paper in contact with the item is distributed a detection task by a data transmission and control module. The test papers of the remaining wipe sampling points need to be updated to prevent the contaminated test paper at this wipe sampling point from entering the subsequent detection process and interfering with the detection result.

In this embodiment, optionally, a trigger sensor is provided to trigger the operation of each part of the trace substance detection assembly.

The security check of express parcels is taken as an example. In this embodiment, an express parcel is first moved along the conveying direction by the belt conveyor 2-1 of the security check machine 2 to obtain the security check X-ray image of the express parcel and the security check X-ray images of items in the express parcel. Then, the express parcel reaches the conveying assembly 1 through the wipe sampling apparatus 3. In practical applications, express parcels may first pass through the security check machine and then pass through the trace substance detection assembly, or first pass through the trace substance detection assembly and then pass through the security check machine.

Terms used herein are only used to describe embodiments. In addition, it is to be understood that the terms "including" and/or "having" used in the specification are intended to mean the existence of the described features, numbers, steps, operations, assemblies, elements or combinations thereof, without excluding the existence or addition of one or more other features, numbers, steps, operations, assemblies, elements, or combinations thereof The terms used herein, including technical and scientific terms, have the same meanings as the terms commonly understood by those skilled in the art It is to be understood that the terms defined in the commonly used dictionaries have consistent meanings with the terms in the related art Optionally, the gap disposed on the item conveying channel composed of the conveying assembly and the conveying apparatus of the security check machine may be a gap between the conveying assembly and the conveying apparatus of the security check machine, a gap between a conveying assembly and a conveying assembly, or a gap disposed on the conveying channel or the conveying apparatus of the security check machine Optionally, the gap severs as the wipe channel of the trace substance detection assembly, and 5 mm < the width of the wipe channel (that is, the width of the gap) < 200 mm.

Optionally, the trace substance detection assembly is located in a gap between conveying assemblies or between the conveying assembly and the security check machine.

Optionally, the trace substance detection assembly is composed of one or more trace substance detection apparatuses for wipe sampling A trace substance detection apparatus for wipe sampling may include one or more wipe sampling points and a data processing and control module When there are multiple trace substance detection apparatuses for wipe sampling, and wipe sampling points, the trace substance detection apparatuses for wipe sampling, and the wipe sampling points are disposed in an array.

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

Optionally, the test paper is in a shape of a band. The test paper is secured on output shafts of two stepper motors on the detection body in a coil form. The support member is configured to support the test paper between the output shafts of the two stepper motors. The test paper is exposed to the gap between the conveying assembly and the conveying apparatus of the security check machine through the support member. The test paper is not lower than the conveying plane of the conveying assembly, and the height of the test paper higher than the conveying plane < 10 mm.

Optionally, the detection sensor is selected from sensors based on fluorescence spectroscopy 20 technology, ionic migration technology, Raman spectroscopy technology, mass spectrometry and biosensing technologies, and MEMS sensing technology.

The present application further provides a security check method using the preceding security check apparatus. The method includes: acquiring an image, where the X-ray image of an item to be detected is obtained after the item to be detected passes through the X-ray security check channel of the security check machine; acquiring a trace substance, where the item to be detected passes through the trace substance detection assembly so that the detection data of the trace substance of the item to be detected is obtained; detecting and recognizing, where the X-ray image and the detection data of the trace substance are analyzed separately so that a detection result is obtained; and outputting the result.

Optionally, the trace substance is one or more of contraband substances such as explosives, drugs, and highly toxic substances. Since a single X-ray security check technology cannot accurately distinguish substances, the security check machine described in the present disclosure can better detect contraband such as explosives, drugs, and/or highly toxic substances through combining the X-ray technology with the trace detection technology in the present disclosure. Thus, the defects, which are according to the trace detection technology in the related art, manually sampling are conducted one by one, and cannot be directly combined with the X-ray security check machine to perform online detection, are overcome. By disposing wipe detection apparatuses and wipe sampling points in an array, an item can be detected no matter where the item passes through the conveying apparatus, implementing continuous, comprehensive, and uninterrupted online wipe and detection on the stream line.

In addition, the cost of using the method and system in the present disclosure is low. In the related art, merely the trace detection instruments and devices for continuous collection proposed by the present disclosure need to be added on the basis of production materials such as security check devices and personnel. Thus, the cost is greatly saved, and the requirement of comprehensive, accurate arid efficient security check of contraband which is harmful to mass, enterprises, and social safety and interests in social production and life is met.

Claims

What is claimed is: 1. A security check apparatus, comprising a conveying assembly, a security check machine, and a trace substance detection assembly, wherein the security check machine comprises a conveying apparatus, a security check chamber, and an operation center; and the trace substance detection assembly is located in a gap disposed on an item conveying channel composed of the conveying assembly and the conveying apparatus, and the trace substance detection assembly comprises a trace substance detection apparatus configured for wipe sampling, wherein the trace substance detection apparatus comprises a wipe sampling point and a data processing and control module, wherein the wipe sampling point comprises a test paper. a detection sensor, and a detection body, and the security check apparatus further comprises a support member; and the test paper is in a shape of a band, the test paper is secured on output shafts of two stepper motors on the detection body in a coil form, the support member is configured to support the test paper between the output shafts of the two stepper motors, and the test paper is exposed to the gap disposed on the item conveying channel.
2. The security check apparatus according to claim 1, wherein the gap disposed on the item conveying channel comprises at least one of a gap between the conveying assembly and the conveying apparatus, a gap disposed on the conveying assembly, and a gap disposed on the conveying apparatus.
3. The security check apparatus according to claim 1 or claim 2, wherein 5 mm < a width of the gap < 200 mm.
4. The security check apparatus according to claim 1, wherein the test paper is not lower than a conveying plane, and a height of the test paper higher than the conveying plane < 10 mm.
5. The security check apparatus according to claim 1, wherein the detection sensor comprises at least one of a sensor based on fluorescence spectroscopy technology, a sensor based on ionic migration technology, a sensor based on Raman spectroscopy technology, a sensor based on mass spectrometry and biosensing technologies, and a sensor based on ME1V1S sensing technology.
6. The security check apparatus according to claim 1, wherein a plurality of trace substance detection apparatuses are provided, and the plurality of trace substance detection apparatuses are disposed in an way
7. The security check apparatus according to claim 1 or claim 6, wherein a plurality of wipe sampling points are provided, and the plurality of wipe sampling points are disposed in an array.
8. The security check apparatus according to claim 1, wherein the support member is disposed on the detection body in the wipe sampling point.
9. A security check method, the security check method using the security check apparatus according to any one of claims 1 to 8 and comprising: obtaining an X-ray image of an item to be detected after the item to be detected passes through an X-ray security check channel of the security check machine, obtaining detection data of a trace substance of the item to be detected after the item to be detected passes through the trace substance detection assembly, separately analyzing the X-ray image and the detection data of the trace substance to obtain a detection result; and outputting the detection result.