CN115684113A - Device and method for automatically detecting trace substances on surface - Google Patents
Device and method for automatically detecting trace substances on surface Download PDFInfo
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- CN115684113A CN115684113A CN202211340513.8A CN202211340513A CN115684113A CN 115684113 A CN115684113 A CN 115684113A CN 202211340513 A CN202211340513 A CN 202211340513A CN 115684113 A CN115684113 A CN 115684113A
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Images
Abstract
The invention discloses a device for automatically detecting trace substances on the surface, which comprises: a transport mechanism that drives the card in the input-output path; the test strip receiving and sending mechanism comprises a test strip and a test strip driving component, the moving path of the test strip is close to the input and output path and is arranged in a mode that the card rubs the surface of the test strip in the input and output processes, and the test strip driving component is used for driving the test strip; and the detection mechanism is arranged on one side of the moving path and is used for detecting the trace substance picked up by the test tape when the test tape driving assembly drives the friction area of the test tape and the card to move to the position corresponding to the detection mechanism. The invention also provides an automatic detection method of the surface trace substance. The invention simplifies the trace substance detection process, 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 invention relates to an automatic detection device and method for surface trace substances.
Background
At present, at airport, high-speed railway, subway, customs, building, public meeting place use effective card formula certificate in a large number and carry out effective current, in order to strengthen carrying dangerous contraband on one's body and detecting, traditional mode is that the staff is handheld to be examined, adopt the test strip to wipe its carrying object and health clothes and pick up its surperficial trace material, distinguish the analysis on sending to professional equipment, and traditional detection method can't satisfy the current demand in market to one-to-one detection efficiency, only can adopt the collection mode in batches, greatly reduced the response rate to carrying dangerous contraband, its operation flow is complicated, the cost of labor is high, detection efficiency is low. Therefore, there is a need to design a technical solution that can overcome the above-mentioned drawbacks to some extent.
Disclosure of Invention
The invention aims to provide a device and a method for automatically detecting surface trace substances, which pick up the trace substances on the surface of a card through a test strip and move the trace substances to a detection mechanism for detection, thereby simplifying the detection flow of the trace substances, improving the detection efficiency and reducing the labor cost.
To achieve these objects and other advantages and in accordance with the purpose of the invention, as embodied and broadly described herein, there is provided an automatic surface trace species detection apparatus, comprising: a transport mechanism for driving the card in the input output path; a test strip receiving and transmitting mechanism including a test strip and a test strip driving unit, wherein a moving path of the test strip is close to the input/output path and is arranged in a manner that the card rubs the surface of the test strip during the input/output process, and the test strip driving unit is used for driving the test strip; and the detection mechanism is arranged on one side of the moving path and is used for detecting the trace substance picked up by the test tape when the test tape driving assembly drives the friction area of the test tape and the card to move to the position corresponding to the detection mechanism.
Furthermore, the conveying mechanism comprises a plurality of pairs of conveying wheel sets and motors, the pairs of conveying wheel sets are arranged at intervals from top to bottom to form the input and output paths, the motors drive the pairs of conveying wheel sets, the motors are reversible motors, the motors positively rotate to drive the pairs of conveying wheel sets to input the cards from the input and output paths, and the motors reversely rotate to drive the pairs of conveying wheel sets to output the cards from the input and output paths.
Further, the test strip bypasses one of the conveying wheel sets, so that the card rubs the surface of the test strip in the input and output processes.
Further, it is many to the conveying wheelset includes a pair of first conveying wheelset, a pair of second conveying wheelset, a pair of third conveying wheelset and a pair of fourth conveying wheelset that arrange side by side from outer to inner, and is a pair of first conveying wheelset, a pair of second conveying wheelset, a pair of third conveying wheelset and a pair of fourth conveying wheelset interval about being equal sets up, is located the top or is located the below first conveying wheelset second conveying wheelset third conveying wheelset with fourth conveying wheelset passes through belt drive and connects, the test belt is walked around and is located the below third conveying wheelset.
Further, a first photoelectric sensor is arranged at the inlet of the card input and output path and used for judging whether the card is inserted from the inlet of the input and output path or not.
Further, a second photoelectric sensor is arranged on the innermost side of the card input and output channel and used for judging whether the card reaches a preset position or not.
Furthermore, the test strip driving assembly comprises a furling wheel set, a furling wheel set motor, a hair roller set and a hair roller set motor, wherein the furling wheel set and the hair roller set are respectively positioned at two ends of the moving path, an unused test strip is wound on the hair roller set, the hair roller set motor drives the hair roller set to rotate so as to release the unused test strip, and the furling wheel set motor drives the furling wheel set to rotate so as to wind the used test strip; when the card is output from the input and output path through the conveying mechanism, the hair roller set motor drives the hair roller set to release an unused test tape, and the winding roller set motor drives the winding roller set to rotate and wind the used test tape, so that a friction area between the test tape and the card moves to correspond to the detection mechanism.
The speed measuring wheel set comprises a gear, a code disc and a speed measuring photoelectric sensor, holes are formed in the test belt at intervals and meshed with the gear, the code disc and the gear are coaxially arranged, 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; and correcting the retraction speed of the retraction wheel set and the release speed of the hair roller set according to the moving speed of the test strip.
Further, the detection mechanism comprises a heating assembly, an air suction assembly, a fluorescent material tube, a light source, a fluorescent filter and a photoelectric detector, the air suction assembly faces the surface of the test strip, on which the trace substances are picked up, the heating assembly is arranged opposite to the air suction assembly and faces the surface of the test strip, on which the trace substances are not picked up, the fluorescent material tube is communicated with the air suction assembly, the light source faces the fluorescent material tube, the photoelectric detector is used for receiving the spectrum generated by the fluorescent material tube, and the fluorescent filter is arranged between the fluorescent material tube and the photoelectric detector.
According to another aspect of the invention, a method for automatically detecting surface trace substances is provided, and the device for automatically detecting surface trace substances is used for detecting the trace substances on the surface of a card.
The invention at least comprises the following beneficial effects:
the invention utilizes the conveying mechanism to input and output the card, so that the card can rub the test strip in the input and output processes, the test strip can pick up the trace substances on the surface of the card, and the test strip moves the trace substances to the detection mechanism for detection, thereby simplifying the detection flow of the trace substances, improving the detection efficiency and reducing the labor cost.
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 structural diagram of an embodiment of the present application;
FIG. 2 is a schematic diagram of a test strip transceiver according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a tachometer 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 further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
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 combinations thereof.
As shown in fig. 1 to 3, an embodiment of the present application provides an automatic detection apparatus for a surface trace substance, including: a transport mechanism 1 for driving a card 4 in an input-output path; a test tape transceiver 2 including a test tape 201 having a movement path close to the input/output path and arranged 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 unit for driving the test tape; the detection mechanism 3 is arranged on one side of the moving path and is used for detecting the trace substance picked up by the test strip 201 when the test strip driving component drives the area where the test strip rubs with the card 4 to move to correspond to the detection mechanism 3;
in the above embodiment, the trace species may include: explosives such as black powder, ammonium nitrate, trinitrotoluene, TAIAN, hexogen, nitroglycerin, etc.; drugs such as cocaine hydrochloride, heroin hydrochloride, tetrahydrocannabinol, methamphetamine (methamphetamine), ketamine hydrochloride (K powder), morphine hydrochloride, etc.; the size of the input and output path is matched with that of the card 4, the conveying mechanism 1 is arranged on one side of the input and 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 strip 201 is wound on the test strip driving component, the test strip 201 is provided with a specific moving path, the moving path moves along with the moving path, the moving path is close to the input and output path and generates interference, so that the test strip can be rubbed when the card 4 moves in the input and output path, and the test strip can pick up trace substances on the surface of the card 4; the detection mechanism 3 can be a fluorescence quenching detection mechanism, an ion mobility spectrometry detection mechanism, a Raman spectroscopy detection mechanism and the like, the detection mechanism 3 is positioned at one side of the moving path, the test strip 201 moves, and when the picked trace substance moves to correspond to the detection mechanism 3, the detection mechanism 3 detects the trace substance; as shown in fig. 1, an area a is an area where a test strip rubs against a card, an area B is a detection area, during a process that the card moves back and forth in a Y direction, when a surface of the card passes through an point a, the test strip wipes and picks up surface trace substance particles carried by the test strip and passes through an automatic test strip conveying mechanism, after the point a is conveyed to the point B and is conveyed to the point B, the substance detection mechanism analyzes the surface trace substance, after the analysis is completed within a certain time, the test strip is moved from the point B to the point a, and when a next card is inserted and picks up the trace substance, the next card is conveyed to the point B, and the operation is carried out by a back and forth movement, so that the automatic analysis of the trace substance on the surface of the card is realized; it can be seen that, in the embodiment, the card 4 is input and output by using the conveying mechanism 1, so that the card 4 can rub the test strip in the input and output processes, the test strip can pick up the trace substances on the surface of the card 4, the test strip moves the trace substances to the detection mechanism 3 for detection, the result can be detected one by one at any time, the manual inspection of the test strip is avoided, the transmission manual operation process is reduced, the labor cost is reduced, the integrated automatic inspection of the test strip 201 and the detection is realized without manual intervention, the passing efficiency of a group is accelerated, and the detection response rate of dangerous contraband is improved.
In other embodiments, the conveying mechanism 1 includes a plurality of pairs of conveying wheel sets and a motor, the plurality of pairs of conveying wheel sets are arranged at intervals up and down to form the input/output path, the motor drives the plurality of pairs of conveying wheel sets, the motor is a reversible motor, the motor positively rotates to drive the plurality of pairs of conveying wheel sets to input the cards 4 from the input/output path, and the motor reversely rotates to drive the plurality of pairs of conveying wheel sets to output the cards 4 from the input/output path; the upper and lower interval sets up a plurality of pairs the conveying wheelset can closely centre gripping card 4, recycles frictional force and makes conveying wheelset drive card 4 remove in input/output route, changes the rotation direction of motor, and card 4 has different moving direction promptly to with card 4 input or output.
In other embodiments, the test strip passes around one of the transport wheel sets, so that the card 4 rubs against the surface of the test strip 201 during input and output, i.e. the transport wheel set is used both to form the input and output paths and to support the test strip, in the movement path, the input and output paths and the movement path interfere with each other, and the test strip can be rubbed by the card 4.
In other embodiments, the plurality of pairs of 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 set, the second conveying wheel set 102, the third conveying wheel set 103 and the fourth conveying wheel set 104 which are located above or below are connected through belt transmission, and the test belt bypasses the third conveying wheel set 103 which is located below; referring to fig. 1, the four pairs of transmission wheel sets are arranged at intervals to form an input/output path well, the four pairs of transmission wheel sets are arranged at intervals up and down, the test belt bypasses one transmission wheel set below, and the test belt is positioned below the transmission mechanism 1, so that the whole structure is suitable for card insertion and is relatively compact; optionally, card readers 107 are further disposed at positions corresponding to the four pairs of transmission wheel sets to identify the cards 4, so as to implement a basic card-holding passing function.
In other embodiments, a first photosensor 105 is disposed at an entrance of the input/output path of the card 4 for determining whether the card 4 is inserted from the entrance of the input/output path; the first photoelectric sensor 105 determines whether or not the card 4 is inserted based on whether or not the emitted light is blocked, and when the card 4 is inserted, the transport mechanism 1 operates to prepare for inputting the card 4.
In other embodiments, the innermost side of the input/output channel of the card 4 is provided with a second photoelectric sensor 106 for determining whether the card 4 reaches a predetermined position; the second photoelectric sensor 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 transport mechanism 1 operates to prepare for outputting the card 4.
In other embodiments, as shown in fig. 4, the test tape driving assembly comprises a roller set 203, a roller set motor 2031, a roller set 202 and a roller set motor 2021, the roller set 203 and the roller set 202 are respectively located at two ends of the moving path, the roller set 202 has unused test tape wound thereon, the roller set 202 motor drives the roller set 202 to rotate to release the unused test tape, and the roller set 203 motor drives the roller set 203 to rotate to wind the used test tape; after the card 4 is output from the input/output path by the transport mechanism 1, the hair roller set motor drives the hair roller set 202 to release the unused test tape, and the winding roller set motor drives the winding roller set 203 to rotate and 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 hair roller set 202 is used for releasing the unused test strip, the speeds of the winding wheel set 203 and the hair roller set are synchronous, the test strip is ensured to move along the moving path, and the area where the 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 measuring wheel set 204, the speed measuring wheel set 204 includes a gear 2031, a code wheel 2032 and a speed measuring photoelectric sensor 2033, the test strip 201 is provided with holes 2011 at intervals and is engaged with the gear, the code wheel is arranged coaxially with the gear, the edge of the code wheel is provided with a plurality of speed measuring holes 2034 at intervals, and the speed measuring photoelectric sensor is arranged at one side of the code wheel 2032 and is used for recording the number of the speed measuring holes 2034 during the rotation of the code wheel to calculate the moving speed of the test strip 201; the gear has the tooth, the hole meshing on tooth and the test strip, when the test strip 201 removed, can drive gear 2031 and rotate, and then drive the code wheel and rotate, has the hole of testing the speed on the code wheel, and the photoelectric sensor 2033 that tests the speed is whether sheltered from according to the light of transmission, counts the hole of testing the speed, and the distance between the hole of testing the speed is known, according to the quantity and the time of the hole of testing the speed, can calculate the rotational speed of code wheel, gear, and then obtain the translation rate in test strip.
In other embodiments, a directional wheel set 205 is further included to tension the test strip 201 and to alter the path of travel of the test strip to facilitate trace species detection.
In other embodiments, the retraction speed of the retraction roller set 203 and the release speed of the hair roller set 202 are corrected according to the moving speed of the test tape, so that the inconsistency of the retraction speed, the release speed and the moving speed can be avoided, and the area on the test tape 201 where the surface trace substance is picked up cannot accurately reach the corresponding test mechanism.
In other embodiments, a form of the detection mechanism is provided, which includes a heating assembly 302, a aspirating assembly 301, a fluorescent material tube 303, a light source 305, a fluorescent filter 306, and a photodetector 304, wherein the aspirating assembly 301 faces a surface of the test strip 201 where the trace substance is picked up, the heating assembly 302 is disposed opposite the aspirating assembly 301 and faces a surface of the test strip 201 where the trace substance is not picked up, the fluorescent material tube 303 is in communication with the aspirating assembly 301, the light source 305 faces the fluorescent material tube 303, the photodetector 304 is configured to receive a spectrum generated by the fluorescent material tube 303, and the fluorescent filter 306 is disposed between the fluorescent material tube and the photodetector; when the test strip 201 carries the trace substance to move to the point B, the heating component 302 automatically moves along the V direction, heats the surface substance of the test strip, gasifies the trace substance, then the gasified trace substance is sucked into the fluorescent material tube 303 by the air pressure device, the molecules in the fluorescent material tube 303 form macromolecules, the excitation state of the single fluorescent molecule can be conducted along with the accumulation of the molecules, and excitons are formed; when the absorbed primarily gasified substance and the excitons of the fluorescent material tube 303 contact dangerous forbidden molecules in the range of free path, the excitons can be quenched, so that the fluorescence of the fluorescent material tube 303 is weakened; the fluorescent material tube 303 is irradiated by the light source 305 and processed by the fluorescent filter 306, and the photoelectric detector 304 positioned above the fluorescent material tube 303 analyzes and distinguishes spectrums, so as to distinguish the types of substances according to different spectrums; the embodiments realize the detection of trace substances by utilizing a fluorescence quenching mechanism, and the 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 a surface trace substance automatic detection method, which is used for detecting trace substances on the surface of a card 4 by using the surface trace substance automatic detection device, specifically, the card 4 is input and output by using a conveying mechanism 1, the card 4 rubs a test strip in the input and output processes, the test strip picks up the trace substances on the surface of the card 4 in the rubbing process, and the test strip moves the trace substances to a detection mechanism 3 for detection.
The number of apparatuses and the scale of the process described herein are intended to simplify the description of the present invention. The application, modification and variation of the automatic detection device for surface trace substances of the present invention will be apparent to those skilled in the art.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (10)
1. The automatic detection device for the trace substance on the surface is characterized by comprising:
a transport mechanism for driving the card in the input output path;
the test strip receiving and sending mechanism comprises a test strip and a test strip driving component, the moving path of the test strip is close to the input and output path and is arranged in a mode that the card rubs the surface of the test strip in the input and output processes, and the test strip driving component is used for driving the test strip;
and the detection mechanism is arranged on one side of the moving path and is used for detecting the trace substance picked up by the test strip when the test strip driving assembly drives the friction area of the test strip and the card to move to the position corresponding to the detection mechanism.
2. The apparatus for automatically detecting trace substances on a surface according to claim 1, wherein the transporting mechanism comprises a plurality of pairs of transporting wheel sets and a motor, the plurality of pairs of transporting wheel sets are spaced up and down to form the input/output path, the motor drives the plurality of pairs of transporting wheel sets, the motor is a reversible motor, forward rotation of the motor drives the plurality of pairs of transporting wheel sets to input the card from the input/output path, and reverse rotation of the motor drives the plurality of pairs of transporting wheel sets to output the card from the input/output path.
3. The apparatus according to claim 2, wherein the test strip is passed around one of the transport wheel sets to allow the card to rub against the surface of the test strip during the input and output processes.
4. The apparatus for automatically detecting trace species on a surface according to claim 3, wherein 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 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 set, the second conveying wheel set, the third conveying wheel set and the fourth conveying wheel set located above or below are connected through belt transmission, and the test belt bypasses the third conveying wheel set located below.
5. The automatic surface trace substance detection device according to claim 3, wherein a first photoelectric sensor is provided at an entrance of the card input/output path for determining whether the card is inserted from the entrance of the card input/output path.
6. The automatic surface trace substance detection device according to claim 3, wherein a second photoelectric sensor is provided at an innermost side of the card input/output channel for determining whether the card reaches a predetermined position.
7. The automatic surface trace substance detecting device according to claim 1, wherein the test tape driving assembly comprises a winding wheel set, a winding wheel set motor, a hair roller set and a hair roller set motor, the winding wheel set and the hair roller set are respectively located at two ends of the moving path, an unused test tape is wound on the hair roller set, the hair roller set motor drives the hair roller set to rotate to release the unused test tape, and the winding wheel set motor drives the winding wheel set to rotate to wind the used test tape;
when the card is output by the conveying mechanism after the input and output path, the hair roller set motor drives the hair roller set to release an unused test strip, and the winding roller set motor drives the winding roller set to rotate and wind the used test strip, so that the test strip and the friction area of the card move to correspond to the detection mechanism.
8. The automatic detection device for surface trace substances according to claim 7, further comprising a speed measuring wheel set, wherein the speed measuring wheel set comprises a gear, a code disc and a speed measuring photoelectric sensor, holes are arranged at intervals on the test tape and are meshed with the gear, the code disc is coaxially arranged with the gear, a plurality of speed measuring holes are arranged at intervals on the edge of the code disc, and the speed measuring photoelectric sensor is arranged on one side of the code disc and is used for recording the number of the speed measuring holes during the rotation of the code disc so as to calculate the moving speed of the test tape; and correcting the retraction speed of the retraction wheel set and the release speed of the hair roller set according to the moving speed of the test strip.
9. The apparatus according to claim 1, wherein the detection mechanism comprises a heating assembly, a getter assembly, a fluorescent material tube, a light source, a fluorescent filter, and a photodetector, the getter assembly faces the surface of the test strip where the trace substance is picked up, the heating assembly is disposed opposite to the getter assembly and faces the surface of the test strip where the trace substance is not picked up, the fluorescent material tube is in communication with the getter assembly, the light source faces the fluorescent material tube, the photodetector is configured to receive the spectrum generated by the fluorescent material tube, and the fluorescent filter is disposed between the fluorescent material tube and the photodetector.
10. The method for automatically detecting the trace substance on the surface is characterized in that the trace substance on the surface of the card is detected by using the device for automatically detecting the trace substance on the surface of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211340513.8A CN115684113B (en) | 2022-10-28 | 2022-10-28 | Automatic detection device and method for surface trace substances |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211340513.8A CN115684113B (en) | 2022-10-28 | 2022-10-28 | Automatic detection device and method for surface trace substances |
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| CN115684113B (en) | 2024-03-08 |
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