CN115684113B - Automatic detection device and method for surface trace substances - Google Patents
Automatic detection device and method for surface trace substances Download PDFInfo
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- CN115684113B CN115684113B CN202211340513.8A CN202211340513A CN115684113B CN 115684113 B CN115684113 B CN 115684113B CN 202211340513 A CN202211340513 A CN 202211340513A CN 115684113 B CN115684113 B CN 115684113B
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Abstract
The invention discloses an automatic surface trace substance detection device, which comprises: a transport mechanism that drives the card in an input-output path; the test belt receiving and transmitting mechanism comprises a test belt and a test belt driving assembly, wherein the moving path of the test belt is close to the input and output path and is arranged in a mode that the card rubs the surface of the test belt in the input and output process, and the test belt driving assembly is used for driving the test belt; and the detection mechanism is arranged on one side of the moving path and is used for detecting trace substances picked up by the test belt when the test belt driving assembly drives the friction area of the test belt and the card to move to correspond to the detection mechanism. The invention also provides an automatic detection method of the surface trace substances. The invention simplifies the trace substance detection flow, improves the detection efficiency and reduces the labor cost.
Description
Technical Field
The invention relates to the technical field related to substance detection. More particularly, the present invention relates to an automatic surface trace substance detection apparatus and method.
Background
At present, a large amount of effective card-type certificates are used for effective passage in airports, high-speed rails, subways, customs, buildings and public gathering places, in order to strengthen detection of dangerous contraband carried on a group body, a traditional mode is that workers carry out handheld detection, test strips are adopted to wipe carried articles and body clothes to pick up trace substances on the surfaces of the articles and the body clothes, and the trace substances are sent to special equipment for discrimination analysis, and the traditional detection method cannot meet market passage requirements on one-to-one detection efficiency, only a batch acquisition mode is adopted, so that response rate to the dangerous contraband carried is greatly reduced, and the operation flow is complex, the labor cost is high, and the detection efficiency is low. Therefore, it is necessary to design a technical solution that can overcome the above-mentioned drawbacks to a certain extent.
Disclosure of Invention
The invention aims to provide an automatic surface trace substance detection device and method, which are used for picking up trace substances on the surface of a card through a test belt and moving the trace substances to a detection mechanism for detection, so that the trace substance detection flow is simplified, the detection efficiency is improved, and the labor cost is reduced.
To achieve these objects and other advantages and in accordance with one aspect of the present invention, there is provided an automatic surface trace species detection apparatus comprising: a transport mechanism for driving the card in the input-output path; the test belt receiving and transmitting mechanism comprises a test belt and a test belt driving assembly, wherein the moving path of the test belt is close to the input and output path and is arranged in a mode that the card rubs the surface of the test belt in the input and output process, and the test belt driving assembly is used for driving the test belt; and the detection mechanism is arranged on one side of the moving path and is used for detecting trace substances picked up by the test belt when the test belt driving assembly drives the friction area of the test belt and the card to move to correspond to the detection mechanism.
Further, the conveying mechanism comprises a plurality of pairs of conveying wheel sets and motors, the conveying wheel sets are arranged at intervals up and down to form an input and output path, the motors drive the conveying wheel sets to be reversible motors, the motors drive the conveying wheel sets to input the cards from the input and output path in a forward rotation mode, and the motors drive the conveying wheel sets to output the cards from the input and output path in a reverse rotation mode.
Further, the test strip bypasses one of the transfer wheel sets, so that the card rubs against the surface of the test strip during input and output.
Further, the plurality of pairs of conveying wheel sets comprise a pair of first conveying wheel sets, a pair of second conveying wheel sets, a pair of third conveying wheel sets and a pair of fourth conveying wheel sets which are arranged side by side from outside to inside, the pair of first conveying wheel sets, the pair of second conveying wheel sets, the pair of third conveying wheel sets and the pair of fourth conveying wheel sets are all arranged at intervals up and down, the first conveying wheel sets, the second conveying wheel sets, the third conveying wheel sets and the fourth conveying wheel sets which are arranged above or below are connected through belt transmission, and the test belt bypasses the third conveying wheel sets which are arranged below.
Further, a first photoelectric sensor is arranged at the inlet of the card input/output path and used for judging whether the card is inserted from the inlet of the card input/output path.
Further, a second photoelectric sensor is arranged at the innermost side of the card input/output channel and used for judging whether the card reaches a preset position.
Further, the test belt driving assembly comprises a rolling wheel set, a rolling wheel set motor, a curling wheel set and a curling wheel set motor, wherein the rolling wheel set and the curling wheel set are respectively positioned at two ends of the moving path, unused test belts are wound on the curling wheel set, the curling wheel set motor drives the curling wheel set to rotate so as to release the unused test belts, and the rolling wheel set motor drives the rolling wheel set to rotate so as to wind the used test belts; when the card is output by the conveying mechanism on the input and output path, the hair curling wheel set motor drives the hair curling wheel set to release unused test strips, and the hair curling wheel set motor drives the hair curling wheel set to rotate and wind the used test strips, so that the friction area between the test strips and the card is moved to correspond to the detection mechanism.
Further, the device also comprises a speed measuring wheel set, wherein the speed measuring wheel set comprises a gear, a code wheel and a speed measuring photoelectric sensor, holes are formed in the test belt at intervals and meshed with the gear, the code wheel is coaxially arranged with the gear, a plurality of speed measuring holes are formed in the edge of the code wheel at intervals, and the speed measuring photoelectric sensor is arranged on one side of the code wheel and used for recording the number of the speed measuring holes in the rotation process of the code wheel so as to calculate the moving speed of the test belt; correcting the winding speed of the winding wheel set and the releasing speed of the curling wheel set according to the moving speed of the test belt.
Further, the detection mechanism comprises a heating component, an air suction component, a fluorescent material pipe, a light source, a fluorescent filter sheet and a photoelectric detector, wherein the air suction component faces to the surface of the test strip, the surface of trace substances are picked up by the test strip, the heating component is opposite to the air suction component and faces to the surface of the test strip, the trace substances are not picked up by the test strip, the fluorescent material pipe is communicated with the air suction component, the light source faces to the fluorescent material pipe, the photoelectric detector is used for receiving a spectrum generated by the fluorescent material pipe, and the fluorescent filter sheet is arranged between the fluorescent material pipe and the photoelectric detector.
According to another aspect of the invention, an automatic surface trace substance detection method is provided, and the automatic surface trace substance detection device is used for detecting trace substances on the surface of a card.
The invention at least comprises the following beneficial effects:
according to the invention, the card is input and output by utilizing the conveying mechanism, so that the card can rub the test belt in the input and output process, the trace substance on the surface of the card can be picked up by the test belt, and the trace substance is moved to the detecting mechanism by the test belt for detection, so that the trace substance detection flow is simplified, the detection efficiency is improved, and the labor cost is reduced.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present application;
FIG. 2 is a schematic diagram of a test strip transceiver mechanism according to an embodiment of the present application;
FIG. 3 is a schematic structural view of a speed measuring wheel set according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a detection mechanism according to an embodiment of the present application.
Detailed Description
The present invention is described in further detail below with reference to the drawings to enable those skilled in the art to practice the invention by referring to the description.
It will be understood that terms, such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
As shown in fig. 1 to 3, embodiments of the present application provide an automatic surface trace substance detecting apparatus including: a conveying mechanism 1 for driving the card 4 in an input-output path; a test tape transceiver 2 including a test tape 201, the moving path of which is close to the input/output path and is disposed in such a manner that the card 4 rubs against the surface of the test tape 201 during input/output, and a test tape driving assembly for driving the test tape; a detection mechanism 3 disposed on one side of the moving path for detecting trace substances picked up by the test tape 201 when the test tape driving assembly drives the region where the test tape rubs against the card 4 to move to correspond to the detection mechanism 3;
in the above embodiment, the trace species may include: explosive substances such as black powder, ammonium nitrate, trinitrotoluene, triamcinolone acetonide, thioxogold, nitroglycerin, etc.; toxins such as cocaine hydrochloride, heroin hydrochloride, tetrahydrocannabinol, methamphetamine (methamphetamine), ketamine hydrochloride (K powder), morphine hydrochloride, etc.; the size of the input/output path is matched with that of the card 4, the conveying mechanism 1 is arranged at one side of the input/output path to input and output the card 4, and the conveying mechanism 1 can be a conveying wheel set, an air cylinder, a screw nut or other linear conveying structures; the test belt 201 is wound on the test belt driving assembly, the test belt 201 has a specific moving path, and moves along with the moving path, the moving path approaches to the input/output path and generates interference, so that the test belt can be rubbed when the card 4 moves in the input/output path, and the trace substances on the surface of the card 4 can be picked up by the measuring belt; the detection mechanism 3 may be a fluorescence quenching detection mechanism, an ion mobility spectrometry detection mechanism, a raman spectrometry detection mechanism, or the like, the detection mechanism 3 being located on the side of the moving path, the test belt 201 moving, and the detection mechanism 3 detecting the trace substance when the picked-up trace substance moves to correspond to the detection mechanism 3; as shown in fig. 1, the area a in fig. 1 is the friction area between the test belt and the card, the area B is the detection area, in the process that the card moves back and forth in the Y direction, when the card surface passes through the point a, the test belt wipes trace substance particles on the pickup surface, the point a carries trace substance particles on the pickup surface, and the trace substance particles pass through the automatic test belt conveying mechanism, after the point a is conveyed to the point B, the substance detection mechanism analyzes trace substance on the surface, after the analysis is completed, the test belt moves from the point B to the point a, and the trace substance is waited for the insertion of the next card to be conveyed to the point B again, and the reciprocating motion works to realize the automatic analysis of trace substance on the card surface; it can be seen that, this embodiment utilizes transport mechanism 1 input and output card 4 for card 4 can rub the test area at input/output in-process, and the trace substance on card 4 surface can be picked up to the test area that makes, and the test area removes trace substance to detection mechanism 3 and detects, can examine at any time the result at any time one to one, has avoided the manual work of test strip to send the inspection, has reduced transmission manual operation flow, has reduced the cost of labor, realizes that test area 201 and detection integration automation send the inspection to need not manual intervention, has accelerated the passing efficiency of crowd, has improved the detection response rate of dangerous contraband.
In other embodiments, the conveying mechanism 1 includes a plurality of pairs of conveying wheel sets and a motor, the pairs of conveying wheel sets are arranged up and down at intervals to form the input and output path, the motor drives the pairs of conveying wheel sets, the motor is a reversible motor, the motor rotates forward to drive the pairs of conveying wheel sets to input the card 4 from the input and output path, and rotates reversely to drive the pairs of conveying wheel sets to output the card 4 from the input and output path; the card 4 can be closely clamped by a plurality of pairs of conveying wheel groups which are arranged at intervals up and down, the conveying wheel groups are driven by friction force to move the card 4 in an input and output path, the rotating direction of a motor is changed, and the card 4 has different moving directions so as to input or output the card 4.
In other embodiments, the test strip bypasses one of the transfer wheel sets, so that the card 4 rubs against the surface of the test strip 201 during input and output, i.e., the transfer wheel set is used to both form an input and output path and support the test strip, and in the moving path, the input and output path and the moving path interfere with each other, and the test strip can be rubbed by the card 4.
In other embodiments, the plurality of pairs of the conveying wheel sets include a pair of first conveying wheel sets 101, a pair of second conveying wheel sets 102, a pair of third conveying wheel sets 103 and a pair of fourth conveying wheel sets 104 which are arranged side by side from outside to inside, the pair of first conveying wheel sets 101, the pair of second conveying wheel sets 102, the pair of third conveying wheel sets 103 and the pair of fourth conveying wheel sets 104 are all arranged at intervals up and down, the first conveying wheel sets, the second conveying wheel sets 102, the third conveying wheel sets 103 and the fourth conveying wheel sets 104 which are arranged above or below are connected through belt transmission, and the test belt bypasses the third conveying wheel sets 103 arranged below; referring to fig. 1, four pairs of transmission wheel sets are arranged at intervals to form an input and output path well, the four pairs of transmission wheel sets are arranged at intervals up and down, a test belt bypasses one transmission wheel set below, and the test belt is positioned below a transmission mechanism 1, so that the whole structure is suitable for card insertion and is compact; optionally, card readers 107 are further arranged at positions corresponding to the four pairs of transmission wheel sets to identify the card 4, so as to realize the basic function of card holding and passing.
In other embodiments, a first photosensor 105 is disposed at the entrance of the card 4 input-output path, for determining whether the card 4 is inserted from the entrance of the input-output path; the first photoelectric sensor 105 determines whether the card 4 is inserted or not based on whether the emitted light is blocked, and when the card 4 is inserted, the transport mechanism 1 is operated to prepare for inputting the card 4.
In other embodiments, a second photoelectric sensor 106 is disposed at the innermost side of the input/output channel of the card 4, and is used for judging whether the card 4 reaches a predetermined position; the second photosensor 106 determines whether the card 4 reaches a predetermined position (i.e., the innermost position of the input/output path in fig. 1) based on whether the emitted light is blocked, and when the card 4 reaches the predetermined position, the conveyance mechanism 1 operates to prepare for outputting the card 4.
As shown in fig. 4, in other embodiments, the test strip driving assembly includes a winding wheel set 203, a winding wheel set motor 2031, a curling wheel set 202, and a curling wheel set motor 2021, where the winding wheel set 203 and the curling wheel set 202 are respectively located at two ends of the moving path, the curling wheel set 202 is wound with an unused test strip, the curling wheel set 202 motor drives the curling wheel set 202 to rotate to release the unused test strip, and the winding wheel set 203 motor drives the winding wheel set 203 to rotate to wind the used test strip; when the card 4 outputs the input/output path from the conveying mechanism 1, the curling wheel set motor drives the curling wheel set 202 to release unused test tape, and the curling wheel set motor drives the curling wheel set 203 to rotationally wind the used test tape, so that the friction area between the test tape and the card 4 moves to correspond to the detection mechanism 3; the winding wheel set 203 is used for winding the used test strip, the curling wheel set 202 is used for releasing the unused test strip, and the speeds of the winding wheel set and the curling wheel set are synchronous, so that the test strip moves along a moving path, and the area where trace substances on the surface of the card 4 are picked up moves to correspond to the detection mechanism 3 for detection.
In other embodiments, the device further includes a speed measurement wheel set 204, where the speed measurement wheel set 204 includes a gear 2031, a code wheel 2032, and a speed measurement photoelectric sensor 2033, holes 2011 are disposed on the test belt 201 at intervals and meshed with the gear, the code wheel is coaxially disposed with the gear, a plurality of speed measurement holes 2034 are disposed on an edge of the code wheel at intervals, and the speed measurement photoelectric sensor is disposed on one side of the code wheel 2032 and is used for recording the number of the speed measurement holes 2034 in the rotation process of the code wheel so as to calculate the moving speed of the test belt 201; the gear has the tooth, and the hole meshing on tooth and the test strip can drive gear 2031 and rotate when test strip 201 removes, and then drives the code wheel and rotate, has the hole that tests the speed on the code wheel, tests the speed photoelectric sensor 2033 and is sheltered from according to the light of transmission, and the hole that tests the speed counts, and the distance between the hole that tests the speed is known, according to the quantity and the time in hole that tests the speed of testing, can calculate the speed of rotation of code wheel, gear, and then obtains the removal speed in test strip.
In other embodiments, a set of directional wheels 205 is also included for tensioning the test strip 201 and changing the path of movement of the test strip to facilitate trace species detection.
In other embodiments, the correction of the winding speed of the winding wheel set 203 and the releasing speed of the curling wheel set 202 according to the moving speed of the test tape can avoid that the winding speed, the releasing speed and the moving speed are inconsistent, so that the area of the test tape 201 where the trace substance on the surface is picked up cannot accurately reach the corresponding test mechanism.
In other embodiments, a form of detection mechanism is provided, comprising a heating assembly 302, a getter assembly 301, a fluorescent material tube 303, a light source 305, a fluorescent filter sheet 306, and a photodetector 304, the getter assembly 301 being disposed opposite the getter assembly 301 toward a surface of the test strip 201 that is not picked up by trace species, the fluorescent material tube 303 being in communication with the getter assembly 301, the light source 305 being disposed toward the fluorescent material tube 303, the photodetector 304 being configured to receive a spectrum of light generated by the fluorescent material tube 303, the fluorescent filter sheet 306 being disposed between the fluorescent material tube and the photodetector; when the trace substance carried by the test strip 201 moves to the point B, the heating component 302 automatically moves along the V direction, and the trace substance is gasified by heating and gasifying the surface of the test strip, and then the air pressure device is arranged to suck the trace substance into the fluorescent material pipe 303, the molecules in the fluorescent material pipe 303 form high molecules, and the excited state of a single fluorescent molecule can be conducted along with molecule accumulation to form excitons; when the substances sucked into the primary gasification contact with dangerous forbidden molecules in the free range of the exciton of the fluorescent material tube 303, the exciton can be quenched, so that the fluorescence of the fluorescent material tube 303 is weakened; the fluorescent material tube 303 is irradiated by a light source 305 and is treated by a fluorescent filter 306, and a photoelectric detector 304 positioned above the fluorescent material tube 303 analyzes and distinguishes the spectrum to distinguish the category of the substance according to different spectrums; the embodiments realize trace substance detection by utilizing a fluorescence quenching mechanism, and a detection mechanism utilizing the principles of ion mobility spectrometry, raman spectroscopy and the like is easily constructed by referring to the mode of the embodiment.
The embodiment of the application provides an automatic surface trace substance detection method, which is used for detecting trace substances on the surface of a card 4 by using the automatic surface trace substance detection device, specifically, the card 4 is input and output by using a conveying mechanism 1, a test belt is rubbed by the card 4 in the input and output process, the trace substances on the surface of the card 4 are picked up by the test belt in the rubbing process, and the trace substances are moved to a detection mechanism 3 by the test belt for detection.
The number of equipment and the scale of processing described herein are intended to simplify the description of the present invention. The use, modification and variation of the surface trace species automatic detection apparatus of the present invention will be apparent to those skilled in the art.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the invention would be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (6)
1. Automatic detection device of surface trace material, its characterized in that includes:
a transport mechanism for driving the card in the input-output path;
the test belt receiving and transmitting mechanism comprises a test belt and a test belt driving assembly, wherein the moving path of the test belt is close to the input and output path and is arranged in a mode that the card rubs the surface of the test belt in the input and output process, and the test belt driving assembly is used for driving the test belt;
a detection mechanism arranged on one side of the moving path and used for detecting trace substances picked up by the test belt when the test belt driving assembly drives the friction area of the test belt and the card to move to correspond to the detection mechanism;
the conveying mechanism comprises a plurality of pairs of conveying wheel sets and a motor, the pairs of conveying wheel sets are arranged at intervals up and down to form an input and output path, the motor drives the pairs of conveying wheel sets, the motor is a reversible motor, the motor rotates positively to drive the pairs of conveying wheel sets to input the card from the input and output path, and the motor rotates reversely to drive the pairs of conveying wheel sets to output the card from the input and output path;
the test belt bypasses one of the conveying wheel sets, so that the card rubs the surface of the test belt in the input and output processes;
the test belt driving assembly comprises a rolling wheel set, a rolling wheel set motor, a curling wheel set and a curling wheel set motor, wherein the rolling wheel set and the curling wheel set are respectively positioned at two ends of the moving path, unused test belts are wound on the curling wheel set, the curling wheel set motor drives the curling wheel set to rotate so as to release the unused test belts, and the rolling wheel set motor drives the rolling wheel set to rotate so as to wind the used test belts;
when the card outputs the input and output path through the conveying mechanism, the hair curling wheel set motor drives the hair curling wheel set to release unused test strips, and the hair curling wheel set motor drives the hair curling wheel set to rotate and wind the used test strips, so that the friction area between the test strips and the card moves to correspond to the detection mechanism;
the test device comprises a test belt, a test disc, a speed measuring wheel set, a speed measuring photoelectric sensor, a speed measuring wheel set and a speed measuring device, wherein the speed measuring wheel set comprises a gear, a code disc and the speed measuring photoelectric sensor, holes are formed in the test belt at intervals and meshed with the gear, the code disc is coaxially arranged with the gear, a plurality of speed measuring holes are formed in the edge of the code disc at intervals, and the speed measuring photoelectric sensor is arranged on one side of the code disc and used for recording the number of the speed measuring holes in the rotation process of the code disc so as to calculate the moving speed of the test belt; correcting the winding speed of the winding wheel set and the releasing speed of the curling wheel set according to the moving speed of the test belt.
2. The automatic surface trace species detection apparatus as claimed in claim 1, wherein a plurality of said pairs of transfer wheel sets includes a pair of first transfer wheel sets, a pair of second transfer wheel sets, a pair of third transfer wheel sets and a pair of fourth transfer wheel sets arranged side by side from outside to inside, a pair of said first transfer wheel sets, a pair of said second transfer wheel sets, a pair of said third transfer wheel sets and a pair of said fourth transfer wheel sets are all disposed at an upper and lower interval, said first transfer wheel sets, said second transfer wheel sets, said third transfer wheel sets and said fourth transfer wheel sets being located above or below are connected by belt transmission, and said test strip bypasses said third transfer wheel sets located below.
3. The automated surface trace species detection apparatus as recited in claim 1 wherein a first photosensor is provided at an entrance of said card input output path for determining whether said card is inserted from said entrance of said input output path.
4. The automatic surface trace substance detecting apparatus according to claim 1, wherein a second photosensor is provided at an innermost side of the card input-output passage for judging whether the card reaches a predetermined position.
5. The automated surface trace species detection apparatus as recited in claim 1, wherein the detection mechanism comprises a heating assembly, a gettering assembly, a fluorescent material tube, a light source, a fluorescent filter sheet, and a photodetector, the gettering assembly being disposed opposite the gettering assembly and toward a surface of the test strip where no trace species is picked up, the fluorescent material tube being in communication with the gettering assembly, the light source being oriented toward the fluorescent material tube, the photodetector being configured to receive a spectrum of light generated by the fluorescent material tube, the fluorescent filter sheet being disposed between the fluorescent material tube and the photodetector.
6. The automatic detection method for the surface trace substances is characterized in that the automatic detection device for the surface trace substances is used for detecting the trace substances on the surface of the card.
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| CN115684113A (en) | 2023-02-03 |
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