CN114925714A - Intelligent bar code scanning device and method for blood collection tube - Google Patents

Abstract

The invention discloses a bar code intelligent scanning device and a method for a blood collection tube, which comprises a workbench, a scanning assembly and a sampling assembly which are arranged on the workbench, the scanning assembly comprises a first guide rail, a first motor is arranged on the first guide rail, a power transmission end of the first motor is connected with a first threaded screw rod in a matching way, the first threaded screw rod is connected with a first sliding block in a matching way, the top of the first sliding block is fixedly connected with a first supporting column, the top of the first supporting column is fixedly connected with a first mounting plate, a notch is arranged on the first mounting plate, two bearing seats are fixedly arranged on two sides of the notch, and the rotating shaft is rotatably connected between the two bearing seats, so that the automatic clamping device has the advantages of high response speed, high clamping speed, simple structure, convenience in assembly, easiness in control, low manufacturing cost and high reliability, and can be used in automatic control devices on a large scale.

Description

Intelligent bar code scanning device and method for blood collection tube

Technical Field

The invention relates to the technical field of bar code identification, in particular to a device and a method for intelligently scanning bar codes of blood sampling tubes.

Background

With the continuous development of medical technology and the continuous improvement of medical examination level, various blood examinations become essential important links in disease diagnosis and treatment, and the adoption of blood collection tubes to collect blood as test samples also gradually becomes a common examination mode. After medical personnel gathered blood sample through the heparin tube, at first can paste the bar code that corresponds on the heparin tube, place the heparin tube in the test-tube rack again, then batch transport the heparin tube to the assay center again and carry out corresponding inspection to the blood sample in each heparin tube, and have the identification code of the only discernment of identity on the bar code, through logging the identity information that the bar code scan corresponds, before follow-up assay center tests this blood sample, the bar code on the heparin tube need be rescanned, further confirm the information of discerning each blood sample, thereby avoid appearing the condition of assay project mistake. However, during the transfer and use of the bar code, the bar code inevitably has defects such as scratches, stains, incomplete printing, and the like, so that the bar code cannot be identified. And when the assay center scans and identifies each bar code, usually adopt artificial mode to scan and identify the bar code on the heparin tube one by one, and medical personnel intensity of labour is big, and degree of automation is low.

Disclosure of Invention

The invention overcomes the defects of the prior art and provides a device and a method for intelligently scanning bar codes of blood collection tubes.

In order to achieve the aim, the invention adopts the technical scheme that:

the invention discloses a bar code intelligent scanning device for a blood collection tube, which comprises a workbench, a scanning assembly and a sampling assembly, wherein the scanning assembly and the sampling assembly are arranged on the workbench;

the scanning assembly comprises a first guide rail, a first motor is mounted on the first guide rail, a power transmission end of the first motor is connected with a first threaded screw rod in a matching mode, a first sliding block is connected on the first threaded screw rod in a matching mode, a first supporting column is fixedly connected to the top of the first sliding block, a first mounting plate is fixedly connected to the top of the first supporting column, a notch is formed in the first mounting plate, two bearing seats are fixedly mounted on two sides of the notch, and a rotating shaft is rotatably connected between the two bearing seats;

the rotating shaft is fixedly connected with a Y-shaped swinging piece, the bottom of the Y-shaped swinging piece penetrates through the notch and extends to the lower part of the first mounting plate, the bottom of the Y-shaped swinging piece is fixedly connected with a first fixing plate, and the first fixing plate is fixedly provided with a bar code scanning assembly and an optical camera;

the bar code scanning assembly comprises a bar code scanner, a signal converter and a signal processor, the bar code scanner is electrically connected with the signal converter through a lead, the signal converter is electrically connected with the signal processor through a lead, light emitted by the bar code scanner irradiates on a bar code, the light with different reflection intensities is converted into digital signals through the signal converter according to different reflection rates of black and white bar codes in the bar code, and the digital signals are restored into character information through the signal processor, so that the information recorded by the bar code is identified;

be provided with the constant head tank on the workstation, the constant head tank is used for fixing a position blood sampling tube.

Further, in a preferred embodiment of the present invention, a first hinge seat and a second hinge seat are respectively hinged to two sides of the top of the Y-shaped swinging member, a first mounting frame and a second mounting frame are respectively disposed on two sides of the first mounting plate, a first fine tuning cylinder is fixedly mounted on the first mounting frame, an output end of the first fine tuning cylinder is connected to a first adjusting rod in a matching manner, a terminal of the first adjusting rod is fixedly connected to the first hinge seat, a second fine tuning cylinder is fixedly mounted on the second mounting frame, an output end of the second fine tuning cylinder is connected to a second adjusting rod in a matching manner, and a terminal of the second adjusting rod is fixedly connected to the second hinge seat.

Further, in a preferred embodiment of the present invention, the sampling assembly includes two support frames fixedly mounted on the worktable, and an i-beam is fixedly mounted on each of the two support frames, a first slide rail is fixedly mounted on the i-beam, a first slide block is slidably connected to the first slide rail, a first driving motor is fixedly mounted on the first slide block, an output end of the first driving motor is connected to a first rotating shaft in a matching manner, a first gear is connected to the first rotating shaft in a matching manner, a first rack is further fixedly mounted on the i-beam, the first gear is in meshing transmission with the first rack, a cross beam is further erected between the two first slide blocks, an L-shaped fixing member is fixedly mounted on the cross beam, a second guide rail is fixedly mounted on the L-shaped fixing member, a second motor is mounted on the second guide rail, and an output end of the second motor is connected to a second threaded lead screw in a matching manner, and a second sliding block is connected to the second threaded screw rod in a matching manner.

Further, in a preferred embodiment of the present invention, a connecting rod is fixedly connected to the second sliding block, a second mounting plate is fixedly connected to a terminal of the connecting rod, a plurality of second driving motors are arranged at predetermined intervals along the length direction of the second mounting plate, an output end of the rotating motor is connected to a second rotating shaft in a matching manner, and a terminal of the second rotating shaft is connected to a sampling mechanism in a matching manner.

Furthermore, in a preferred embodiment of the present invention, the sampling mechanism includes a circular mounting frame, six sets of supporting guide rails are arranged along a circumferential array at the bottom of the circular mounting frame, a supporting slider is slidably connected to the supporting guide rails, a first mounting bar and a second mounting bar are respectively arranged at two ends of the supporting guide rails, a guide rod is arranged between the first mounting bar and the second mounting bar, a sliding block is slidably connected to the guide rod, the sliding block is further fixedly connected to the supporting slider, a telescopic spring is further sleeved on the guide rod, one end of the telescopic spring is fixedly connected to the sliding block, the other end of the telescopic spring is fixedly connected to the second mounting bar, a magnetic block is arranged at the center of the bottom of the circular mounting frame, and a magnetic shield is further covered on the circular mounting frame.

Further, in a preferred embodiment of the present invention, the sliding block is fixedly connected to one end of the clamping rod, the other end of the clamping rod is fixedly connected to the clamping block, the clamping block is provided with an arc-shaped groove, and the arc-shaped groove is adapted to an outer contour of the blood collection tube.

Further, in a preferred embodiment of the present invention, a plurality of infrared sensors are disposed on the support rail along the length direction, and the infrared sensors are configured to detect position information of the sliding block.

The invention also discloses an identification method of the intelligent barcode scanning device for the blood sampling tube, which is applied to any one intelligent barcode scanning device for the blood sampling tube, and comprises the following steps:

acquiring first image information of each blood collection tube on a sampling mechanism, and extracting second image information of a code area position of each blood collection tube barcode based on the first image information;

determining defect parameter information of each bar code based on second image information of the position of the code area where each bar code of the blood collection tube is located;

generating corresponding scanning parameter information based on the defect parameter information of each bar code;

and controlling a scanning component to scan and identify the bar codes of the blood sampling tubes according to preset scanning parameters based on the scanning parameter information.

Further, in a preferred embodiment of the present invention, the generating of the corresponding scanning parameter information based on the defect parameter information of each barcode specifically includes the following steps:

judging whether the bar code has the defect that one or more bar codes are completely lost;

if the defect that the bar code is completely lost exists, matching and identifying the bar code through a matching screening method;

if the defect that the bar code is completely lost does not exist, judging whether the defect existing in the bar code is communicated with the upper boundary and the lower boundary of the bar code or not;

if the defect is not communicated with the upper boundary and the lower boundary of the bar code, scanning by adopting a whole-section scanning method, determining a whole datum line scanning angle of one-time scanning based on the defect parameter information, and controlling a scanning assembly to carry out whole-section scanning identification on the bar code according to a preset scanning angle based on the whole datum line scanning angle;

if the defect is communicated with the upper boundary and the lower boundary of the bar code, a multi-segment scanning method is adopted for scanning, each datum line scanning angle of multi-segment scanning is determined based on the defect parameter information, and the scanning assembly is controlled to sequentially carry out segmented scanning identification on the bar code according to the preset scanning angle based on each datum line scanning angle.

Further, in a preferred embodiment of the present invention, if there is a defect that the barcode is completely lost, the matching and identifying of the barcode is performed by a matching and screening method, which specifically includes the following steps:

acquiring all bar code information in the current inspection batch in a shared database, and extracting matching characteristic information of each bar code area in all bar codes; the matching characteristic information comprises width information of each bar code and position sequence information of each bar code;

establishing a bar code matching database, and importing the matching characteristic information into the matching database;

acquiring the bar codes which are identified in the current inspection batch, and removing the identified bar codes from the matching database;

obtaining effective characteristic information of a bar code with a defect, wherein the effective characteristic information comprises width information and position sequence information of the bar code which is not completely lost;

matching the effective characteristic information with the matching characteristic information in a matching database one by one to obtain a matching result;

if the number of the matching results is only one, the bar code information in the matching database is bound with the bar code with the defect;

if the matching result is more than one, outputting no-solution information and marking the blood collection tube as abnormal.

The invention solves the technical defects in the background technology, and has the following beneficial effects: thereby the sampling mechanism adopts magnetic force piece and expanding spring effect power component to accomplish and to heparin tube sample identification process, possesses that response speed is fast, and clamping speed is fast, simple structure, convenient assembling, easily control, the cost is with low costs, and the advantage that the credibility is high can use in automatic control device on a large scale. Through adjusting the parameters of the first fine tuning cylinder and the second fine tuning cylinder, the bar code scanner can scan corresponding bar codes according to preset angles, and therefore the process of identifying information of each blood collection tube can be rapidly completed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings of the embodiments can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic perspective view of a scanning device;

FIG. 2 is a schematic perspective view of another view angle of the scanning device;

FIG. 3 is a schematic structural view of a first gear and a first rack;

FIG. 4 is a schematic view of a second guide rail structure;

FIG. 5 is a schematic view of the sampling mechanism;

FIG. 6 is a schematic view of the magnetic block of the sampling mechanism when power is off;

FIG. 7 is a schematic structural view of a magnetic block in the sampling mechanism when energized;

FIG. 8 is a schematic structural view of a support rail and a support slider;

FIG. 9 is a schematic view of a scanning assembly;

FIG. 10 is a schematic diagram of a first mounting plate structure;

FIG. 11 is a schematic view of a first trimming cylinder and a second trimming cylinder;

FIG. 12 is a schematic view of a Y-shaped oscillating member;

the reference numerals are illustrated below: 101. a work table; 102. positioning a groove; 103. a support frame; 104. a steel I-beam; 105. a first slide rail; 106. a first slider; 107. a first drive motor; 108. a first rotating shaft; 109. a first gear; 201. a first rack; 202. a cross beam; 203. an L-shaped fixing member; 204. a second guide rail; 205. a second motor; 206. a second threaded screw; 207. a second slider; 208. a connecting rod; 209. a second mounting plate; 301. a second drive motor; 302. a second rotation shaft; 303. a sampling mechanism; 304. a circular mounting bracket; 305. supporting the guide rail; 306. a support slide block; 307. a first mounting bar; 308. a second mounting bar; 309. a guide bar; 401. a sliding block; 402. a tension spring; 403. a magnetic block; 404. a magnetic shield; 405. a clamping lever; 406. a clamping block; 407. an arc-shaped groove; 408. a first guide rail; 409. a first motor; 501. a first threaded lead screw; 502. a first slider; 503. a first support column; 504. a first mounting plate; 505. a notch; 506. a bearing seat; 507. a rotating shaft; 508. a Y-shaped swinging member; 509. a first fixing plate; 601. a bar code scanner; 602. an optical camera; 603. a first hinge mount; 604. a second hinged seat; 605. a first mounting bracket; 606. a second mounting bracket; 607. a first fine tuning cylinder; 608. a first adjusting lever; 609. a second fine tuning cylinder; 701. a second adjusting lever; 702. a blood collection tube; 703. a test tube rack.

Detailed Description

In order that the above objects, features and advantages of the present invention may be more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and detailed description, which are simplified in illustration only for the purpose of illustrating the basic structure of the present invention and thus only show the structure related to the present invention, and it should be noted that the embodiments and features of the embodiments may be combined with each other in the present application without conflict.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the scope of the present application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific situations.

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

The invention discloses a bar code intelligent scanning device for a blood collection tube, which comprises a workbench 101, and a scanning assembly and a sampling assembly which are arranged on the workbench 101, as shown in fig. 1 and fig. 2.

The workbench 101 is provided with a positioning groove 102, and the positioning groove 102 is used for positioning the blood collection tube.

The table 101 is provided with a positioning groove 102, and the cross-sectional shape and size of the positioning groove 102 are the same as those of the test tube rack 703. When needing to carry out scanning identification to heparin tube 702, can adopt in the manipulator or the artificial mode will be equipped with the test-tube rack of heparin tube and place the constant head tank 102 to the realization is fixed a position the heparin tube in the test-tube rack, so that the heparin tube in the test-tube rack is got to the whole clamp of sampling component, thereby the scanning identification process is accomplished to the efficient.

As shown in fig. 1, fig. 2 and fig. 3, the sampling assembly includes two support frames 103 fixedly mounted on the worktable 101, and two support frames 103 are both fixedly mounted with an i-beam 104, the i-beam 104 is fixedly mounted with a first slide rail 105, the first slide rail 105 is slidably connected with a first slider 106, the first slider 106 is fixedly mounted with a first driving motor 107, an output end of the first driving motor 107 is connected with a first rotating shaft 108 in a matching manner, the first rotating shaft 108 is connected with a first gear 109 in a matching manner, the i-beam 104 is further fixedly mounted with a first rack 201, the first gear 109 is in meshing transmission with the first rack 201, a cross beam 202 is further erected between the two first sliders 106, an L-shaped fixing member 203 is fixedly mounted on the cross beam 202, the L-shaped fixing member 203 is further fixedly mounted with a second guide rail 204, a second motor 205 is installed on the second guide rail 204, the output end of the second motor 205 is connected with a second threaded screw rod 206 in a matching manner, and a second sliding block 207 is connected on the second threaded screw rod 206 in a matching manner.

As shown in fig. 4, a connecting rod 208 is fixedly connected to the second sliding block 207, a second mounting plate 209 is fixedly connected to the end of the connecting rod 208, a plurality of second driving motors 301 are arranged on the second mounting plate 209 along the length direction at preset intervals, the output ends of the rotating motors are connected with a second rotating shaft 302 in a matching manner, and a sampling mechanism 303 is connected to the end of the second rotating shaft 302 in a matching manner.

It should be noted that when the blood sampling tubes on the test tube rack need to be clamped in a row by the sampling mechanism 303, the scanning module can efficiently complete the scanning and identifying of the blood sampling tubes. First, the first driving motor 107 is started, the first driving motor 107 drives the first rotating shaft 108 and the first gear 109 to rotate, and the first slider 106 can slide along the first sliding rail 105 under the matching relationship of the first gear 109 and the first rack 201 in a meshing transmission manner, so that the sampling mechanism 303 can be driven to move to the position right above the first row of blood collection tubes on the test tube rack by controlling the first driving motor 107. And after the sampling mechanism 303 moves to the position right above the first row of blood sampling tubes, the second motor 205 is controlled to rotate forward, so that the second motor 205 drives the second threaded screw rod 206 to rotate, the second sliding block 207 slides downwards along the second threaded screw rod 206, so that the sampling mechanism 303 is driven to move to the position with the preset clamping height of the blood sampling tubes, then the sampling mechanism 303 is controlled to clamp and sample the blood sampling tubes in the first row on the test tube rack, then the second motor 205 is controlled to rotate reversely, so that the second motor 205 drives the second threaded screw rod 206 to rotate, so that the second sliding block 207 slides upwards along the second threaded screw rod 206, so that the blood sampling tubes in the first row are driven to the preset scanning height position, then the positions of the blood sampling tubes are corrected, then the scanning assembly is controlled to scan the bar codes on the blood sampling tubes in the row, and the information of the blood samples of the blood sampling tubes is identified, then, the second motor 205 is controlled to start, and the row of blood collection tubes after scanning and identification is put back into the first row of test tube racks. Then repeat above-mentioned process again and go on the second row until the last blood sampling tube of row scan discernment can on the test-tube rack. Generally, the sampling mechanism 303 is controlled to move back and forth in a tooth meshing transmission mode between the first gear 109 and the first rack 201, so that the sampling mechanism has the advantages of high transmission efficiency and high moving speed, and can greatly improve the sampling efficiency; and the sampling mechanism 303 is controlled to move up and down in a thread engagement transmission mode between the second sliding block 207 and the second threaded screw rod 206, so that the sampling mechanism has the advantages of high transmission precision and stable moving process, and can greatly improve the sampling precision.

It should be noted that, after the sampling mechanism 303 clamps the blood sampling tubes in the same row on the test tube rack, due to the difference of the storage angles, some of the barcodes on the blood sampling tubes may not be located in the area that can be scanned by the barcode scanner 601, for example, may be located right behind or at the side of the scanning position that can be scanned by the barcode scanner, so that the barcode scanner 601 cannot scan and identify the barcodes due to the blocked line of sight or the dead scanning area, therefore, before the barcode scanner 601 scans and identifies the blood sampling tubes, it is necessary to determine whether the barcodes of the blood sampling tubes are located at the normal scanning position by using the image processing and identification technology, and if not, it is necessary to control the second driving motor 301 to rotate according to a preset angle, so as to drive the second rotating shaft 302 to rotate the corresponding blood sampling tubes by a certain angle, the bar code of this heparin tube can on being in normal scanning position to ensure that the bar code on each heparin tube all is in on the exact scanning position, and then improved scanning device's reliability, realized intelligent control.

As shown in fig. 5, 6, 7, and 8, the sampling mechanism 303 includes a circular mounting frame 304, the bottom of the circular mounting frame 304 is provided with six sets of supporting guide rails 305 along a circumferential array, the supporting guide rails 305 are slidably connected with supporting sliders 306, two ends of the supporting guide rails 305 are respectively provided with a first mounting bar 307 and a second mounting bar 308, a guide rod 309 is disposed between the first mounting bar 307 and the second mounting bar 308, a sliding block 401 is slidably connected to the guide rod 309, the sliding block 401 is further fixedly connected to the supporting sliders 306, the guide rod 309 is further sleeved with a telescopic spring 402, one end of the telescopic spring 402 is fixedly connected to the sliding block 401, the other end of the telescopic spring 402 is fixedly connected to the second mounting bar 308, a magnetic block 403 is disposed at the center of the bottom of the circular mounting frame 304, the circular mounting frame 304 is also covered with a magnetic shield 404.

The sliding block 401 is fixedly connected with one end of the clamping rod 405, the other end of the clamping rod 405 is fixedly connected with the clamping block 406, an arc-shaped groove 407 is formed in the clamping block 406, and the arc-shaped groove 407 is matched with the outer contour of the blood sampling tube.

It should be noted that the working principle and the process of the sampling mechanism 303 are as follows: after the sampling mechanism 303 moves to a position with a preset clamping height of the blood sampling tube, the magnetic block 403 is energized, and the energized magnetic block 403 has magnetic force, under the attraction of the magnetic force, each sliding block 401 slides along the guide rod 309 to a side close to the magnetic block 403 until sliding to the first mounting bar 307 and clinging to the first mounting bar 307, at this time, the expansion spring 402 is in a stretched state, and when the sliding block 401 slides to the first mounting bar 307, the clamping block 406 and the clamping block 406 are driven to move towards the inner side of the circular mounting frame 304, so that the corresponding areas of the blood sampling tube are clamped through the six arc-shaped grooves 407, thereby completing the sampling and fixing function of the whole row of blood sampling tubes, then driving the whole row of blood sampling tubes to the preset scanning height for scanning, after completing the scanning identification, placing the whole row of blood sampling tubes back into the test tube rack, make magnetic block 403 to cut off the power supply, the expanding spring 402 that is in under the tensile state at this moment just can reset under the effect of resilience force to can pull sliding block 401 along guide bar 309 to keeping away from magnetic block 403 one side and remove at the in-process that resets, thereby make sliding block 401 drive clamp rod 405 and press from both sides the outside removal of tight piece 406 to circular mounting bracket 304, thereby make arcuation recess 407 no longer press from both sides tight heparin tube, and then accomplish whole sampling process. Overall, thereby this sampling mechanism 303 adopts magnetic force piece 403 and expanding spring 402 effect power component to accomplish the heparin tube sample identification process, and for traditional sampling device who passes through motor or cylinder as power component, this sampling mechanism 303 possesses that response speed is fast, and clamping speed is fast, simple structure, and convenient assembling is easily controlled, and the cost is with low costs, and advantage that credibility is high can use in automatic control device on a large scale.

It should be noted that each circular mounting rack 304 is covered with a magnetic shield 404, so as to avoid the magnetic force generated by the magnetic block 403 in the adjacent sampling mechanism 303 from influencing each other, thereby influencing the clamping effect of the sampling mechanism 303.

It should be noted that the guide bar 309, the support rail 305, and the support slider 306 serve as a guide support. Specifically, when the magnetic force that magnetic block 403 produced attracts sliding block 401 to move or at the process that the rebound force of expanding spring 402 drives sliding block 401 to reset, because the reason of magnetic force or the reason of rebound force self characteristic, sliding block 401 can shift in the process of sliding inevitably, thereby make its in-process losing stability at the removal, thereby influence the control accuracy, consequently need lead to sliding block 401 through guide bar 309, support rail 305 and support slider 306, thereby improve the stability of this device. Moreover, the guide rod 309, the support guide rail 305 and the support slider 306 can provide a support force for the sliding block 401, so that the sliding block 401 is prevented from falling under the action of gravity, and the reliability of the device is improved.

A plurality of infrared sensors are arranged on the support guide rail 305 along the length direction, and the infrared sensors are used for detecting the position information of the sliding block 401.

It should be noted that, several infrared sensors are disposed on the support rail 305 along the length direction to perform failure analysis on the sampling mechanism. Specifically, after the magnetic block 403 is powered on, the position information of the sliding block 401 is detected by the infrared sensor, whether the sliding block 401 is located at the preset position is judged, and if not, it indicates that the magnetic block 403 has completely lost the magnetic force or the magnetic force strength is weakened due to a fault; or after the magnetic block 403 is powered off, the position information of the sliding block 401 is detected by the infrared sensor, and whether the sliding block 401 is located at the preset position is determined, if not, it is determined that the rebound force of the extension spring 402 is completely lost or the strength of the rebound force is weakened due to a fault. And when taking place above trouble, if do not carry out timely maintenance to these troubles, then appear very probably in the in-process that presss from both sides the sampling tube at sampling mechanism 303, the condition that takes place the heparin tube and drop and break because of the centre gripping unstability appears to need the patient to draw blood the sampling again, and then cause serious influence. Therefore, in order to ensure the reliability of the scanning device, after the fault occurs, the infrared sensor can timely feed back fault information and fault positions to the control system, so that the control system gives an alarm, maintenance personnel can immediately maintain the fault, the fault can be timely diagnosed through the infrared sensor, manual troubleshooting is not needed, troubleshooting time is saved, and labor efficiency is improved.

As shown in fig. 9, the scanning assembly includes a first guide rail 408, a first motor 409 is installed on the first guide rail 408, a first threaded screw 501 is connected to the power transmission end of the first motor 409 in a matching manner, a first sliding block 502 is connected to the first threaded screw 501 in a matching manner, a first support column 503 is fixedly connected to the top of the first sliding block 502, a first mounting plate 504 is fixedly connected to the top of the first support column 503, a notch 505 is formed in the first mounting plate 504, two bearing seats 506 are fixedly installed on two sides of the notch 505, and a rotating shaft 507 is rotatably connected between the two bearing seats 506.

It should be noted that, after the blood sampling tubes in the whole row on the test tube rack are clamped to the preset scanning height by the sampling mechanism 303 and the barcode positions on the blood sampling tubes are adjusted by the second driving motor 301, the second image information of the barcodes on the blood sampling tubes is acquired by the optical camera 602, then whether the barcodes are defective or not is identified according to the second image information, if the barcodes are not defective, the corresponding scanning parameters are generated and stored in the data storage device, so that the reference lines emitted by the barcode scanner 601 when scanning the barcodes are parallel to the upper and lower boundaries of the barcodes, and in the process, the scanning angle of the barcode scanner 601 does not need to be adjusted; if the defect exists, the processing system generates corresponding scanning parameters according to the identified defect parameter information, and stores the scanning parameters in the data storage, so that the bar code scanner 601 can scan the bar codes according to the preset scanning angle and the preset number of scanning sections when scanning the reference lines emitted by the bar codes.

It should be noted that, when the bar code in each blood sampling tube on the sampling mechanism 303 needs to be scanned, control first motor 409 and rotate, make first motor 409 drive first screw lead screw 501 and rotate, thereby make first sliding block 502 slide on along first screw lead screw 501, thereby drive bar code scanner 601 and move to on the initial scanning position of predetermineeing, then recall the source program in the data storage ware, make bar code scanner 601 scan first blood sampling tube according to predetermineeing the scanning parameter, after having scanned first blood sampling tube, control first motor 409 and start, thereby drive bar code scanner 601 and move to on the second predetermineeing the scanning position, then make bar code scanner 601 scan second blood sampling tube according to predetermineeing the scanning parameter equally. The above process is repeated until the barcode scanner 601 has scanned the entire row of blood collection tubes on the sampling mechanism 303.

As shown in fig. 10, 11, and 12, a Y-shaped swinging member 508 is fixedly connected to the rotating shaft 507, a bottom of the Y-shaped swinging member 508 passes through the notch 505 and extends to a position below the first mounting plate 504, a first fixing plate 509 is fixedly connected to a bottom of the Y-shaped swinging member 508, and a barcode scanning assembly and an optical camera 602 are fixedly mounted on the first fixing plate 509.

The two sides of the top of the Y-shaped swinging piece 508 are respectively hinged with a first hinged seat 603 and a second hinged seat 604, the two sides of the first mounting plate 504 are respectively provided with a first mounting frame 605 and a second mounting frame 606, a first fine tuning cylinder 607 is fixedly mounted on the first mounting frame 605, the output end of the first fine tuning cylinder 607 is connected with a first adjusting rod 608 in a matching manner, the tail end of the first adjusting rod 608 is fixedly connected with the first hinged seat 603, a second fine tuning cylinder 609 is fixedly mounted on the second mounting frame 606, the output end of the second fine tuning cylinder 609 is connected with a second adjusting rod 701 in a matching manner, and the tail end of the second adjusting rod 701 is fixedly connected with the second hinged seat 604.

The bar code scanning assembly comprises a bar code scanner 601, a signal converter and a signal processor, the bar code scanner 601 is electrically connected with the signal converter through a lead, the signal converter is electrically connected with the signal processor through a lead, light emitted by the bar code scanner 601 shines on a bar code, the light with different reflection intensities is converted into digital signals through the signal converter according to different reflection rates of black and white bar codes in the bar code, and the digital signals are restored into character information through the signal processor, so that the information recorded by the bar code is identified.

It should be noted that the scanning angle of the barcode scanner 601 for scanning the reference line can be controlled by controlling the first fine adjustment cylinder 607 and the second fine adjustment mechanism. Specifically, when a certain barcode needs to be scanned by a scanning reference line of the barcode scanner 601 according to a preset scanning angle of 45 degrees, the first fine tuning cylinder 607 is controlled to enable the first adjusting rod 608 to contract by a preset distance, and the second fine tuning cylinder 609 is controlled to enable the second adjusting rod 701 to extend out by the preset distance, so that the Y-shaped swinging member 508 swings by 45 degrees, and the barcode scanner 601 is driven to swing by 45 degrees; similarly, when a certain barcode needs to be scanned by the scanning reference line of the barcode scanner 601 according to a preset scanning angle of 135 degrees, the first fine tuning cylinder 607 is controlled to extend the first adjusting rod 608 by a preset distance, and the second fine tuning cylinder 609 is controlled to retract the second adjusting rod 701 by the preset distance, so that the Y-shaped swinging member 508 swings by 135 degrees, and the barcode scanner 601 is driven to swing by 135 degrees; when the scanning angle of the barcode does not need to be adjusted, the first trimming cylinder 607 and the second trimming cylinder 609 are in a normal state. Thus, by adjusting the parameters of the first fine adjustment cylinder 607 and the second fine adjustment cylinder 609, the barcode scanner 601 can scan the corresponding barcode according to the preset angle, thereby rapidly completing the process of identifying information of each blood collection tube.

The invention also discloses an identification method of the intelligent barcode scanning device for the blood sampling tube, which is applied to any one intelligent barcode scanning device for the blood sampling tube, and comprises the following steps:

acquiring first image information of each blood collection tube on a sampling mechanism, and extracting second image information of a code area position where each blood collection tube barcode is located based on the first image information;

determining defect parameter information of each bar code based on second image information of the position of the code area where each bar code of the blood collection tube is located;

generating corresponding scanning parameter information based on the defect parameter information of each bar code;

and controlling a scanning component to scan and identify the bar codes of the blood sampling tubes according to preset scanning parameters based on the scanning parameter information.

The defect parameter information includes the size of the area of the defect, the type of the defect, the outline shape of the defect, and the coordinate values of the boundaries of the defect. The scanning parameter information comprises a scanning angle of a scanning datum line, the number of scanning segments, a starting position coordinate of the scanning datum line and the like. The first image is processed in a denoising and filtering mode by using a nonlinear filter, a median filter, a morphological filter and the like, so that denoised second image information is obtained, and the defect identification precision is improved.

Further, in a preferred embodiment of the present invention, the generating the corresponding scanning parameter information based on the defect parameter information of each barcode specifically includes the following steps:

judging whether the bar code has the defect that one or more bar codes are completely lost;

if the defect that the bar code is completely lost exists, matching and identifying the bar code through a matching screening method;

if the defect that the bar code is completely lost does not exist, judging whether the defect existing in the bar code is communicated with the upper boundary and the lower boundary of the bar code or not;

if the defect is not communicated with the upper boundary and the lower boundary of the bar code, scanning by adopting a whole-section scanning method, determining a whole datum line scanning angle of one-time scanning based on the defect parameter information, and controlling a scanning assembly to carry out whole-section scanning identification on the bar code according to a preset scanning angle based on the whole datum line scanning angle;

if the defect is communicated with the upper boundary and the lower boundary of the bar code, scanning by adopting a multi-section scanning method, determining each datum line scanning angle of multi-line scanning based on the defect parameter information, and controlling a scanning assembly to sequentially perform segmented scanning identification on the bar code according to a preset scanning angle based on each datum line scanning angle.

It should be noted that the complete bar code can be divided into two side blank areas, start symbol, data character, check symbol, and end symbol, and it contains several black and white bar codes with different widths and a string of digital information. The principle of identifying the bar code by the bar code scanner 601 is that when laser rays (hereinafter referred to as reference lines) emitted by the bar code scanner 601 irradiate on black and white bar codes corresponding to each character of the bar code, different bar codes generate different light reflection rates, width information of each black and white bar code can be obtained according to different light reflection rates, and information recorded by the bar codes can be obtained by further decoding. Therefore, the key process for identifying the barcode by the barcode scanner 601 is how to accurately acquire the width information of each black-and-white barcode. Therefore, when the barcode scanner 601 identifies a complete and defect-free barcode, we only need to make the reference line emitted by the barcode scanner 601 parallel to the upper and lower boundaries of the barcode, and then can directly read the width of each black-and-white barcode according to the difference of the reflection rate, so as to identify the information of the barcode, and in this process, the scanning angle of the barcode scanner 601 does not need to be adjusted.

However, during the use and transportation of the bar code, defects such as scratches, stains, incomplete printing and the like inevitably occur, and the existing solution to the defects is to correct or reconstruct the defects by using an image processing technology, which involves a large number of correction and repair problems, and the amount of algorithms is extremely large, and the decoding accuracy rate needs to be improved. In view of this, the present invention provides a better method for identifying a bar code with defects in combination with the scanning device, and specifically, we can divide the defects on the bar code into three cases, where the first case is that the defects in the bar code do not completely lose any black-and-white bar code in the bar code and the defects are not connected to the upper and lower boundaries of the bar code, and in this case, we can locate the specific position information occupied by the defects in the bar code through the second image information obtained by the optical camera 602, then find a suitable datum line scanning angle, so that the datum line can avoid the region with defects and can penetrate through the whole bar code when scanning the bar code, and then obtain the width information of each black-and-white bar code on the bar code through the cosine law, for example, if the defects of the bar code are located at the left lower side or the right upper side of the bar code, at the moment, the width information of each black-white bar code in the bar code can be identified at one time only by enabling the scanning datum line to simultaneously penetrate through the upper left corner and the lower right corner of the bar code and combining the cosine law, a large number of defect correction or reconstruction algorithms are not needed, the identification rate is higher, and the accuracy is higher; the second situation is that the defect in the barcode does not cause any black-white barcode in the barcode to be completely lost and the defect is communicated with the upper and lower boundaries of the barcode, in this situation, because the information of the black-white barcode in the barcode is too much lost, the information of the barcode can be scanned and identified by finding a suitable datum line scanning angle at one time as in the first situation, the barcode needs to be scanned and identified by a multi-segment scanning and splicing method, for example, if the defect of the barcode is that the left lower corner and the right upper corner of the barcode are communicated with each other, at this time, the barcode can be scanned and identified by adopting a two-segment scanning method, firstly, the datum line scans and identifies the upper left corner area of the barcode according to a first preset angle, and then the datum line scans and identifies the lower right corner area of the barcode according to a second preset angle, then, the two sections of recognized information are spliced together, so that the width information of each black and white bar code in the whole two-dimensional code can be obtained; the third situation is that one or more barcodes are completely lost in the barcodes, and at this time, the barcodes need to be matched and identified through a matching screening method.

Further, in a preferred embodiment of the present invention, if there is a defect that the barcode is completely lost, the matching and identifying of the barcode is performed by a matching and screening method, which specifically includes the following steps:

acquiring all bar code information in the current inspection batch in a shared database, and extracting matching characteristic information of each bar code area in all bar codes; the matching characteristic information comprises width information of each bar code and position sequence information of each bar code;

establishing a bar code matching database, and importing the matching characteristic information into the matching database;

acquiring the bar codes which are identified in the current inspection batch, and removing the identified bar codes from the matching database;

obtaining effective characteristic information of a bar code with defects, wherein the effective characteristic information comprises width information and position sequence information of the bar code which is not completely lost;

matching the effective characteristic information with the matching characteristic information in a matching database one by one to obtain a matching result;

if the number of the matching results is only one, binding the bar code information in the matching database with the bar code with the defect;

if the matching result is more than one, outputting no-solution information and marking the blood collection tube as abnormal.

It should be noted that the test batches are classified according to time periods, for example, in a morning work period of a certain day, when a hospital staff collects a batch of blood samples and the batch of blood samples is transferred to a test center for testing in the morning work period, the barcode information pasted by the medical staff in the whole batch is updated to the shared database in the morning work period. Therefore, before the batch of blood sampling tubes is scanned and identified, matching characteristic information of all barcodes in the batch of blood sampling tubes can be obtained in a shared database, and then a barcode matching database is established. When the image processing technology identifies that the barcode on a certain blood sampling tube has the defect that one or more barcodes are completely lost, firstly, the barcode scanner 601 scans effective characteristic information of the barcode, then, the effective characteristic information is paired with matching characteristic information in a matching database one by one, if the barcode which is the same as the effective characteristic information appears in the matching database, the barcode obtained by matching is marked, and the number of output results is increased by 1; if the number of the matching results is only one, the bar code with the defect is the bar code obtained by matching in the matching database, at this time, the bar code information in the matching database is bound with the bar code with the defect, so that the information of the bar code of the lost bar code can be obtained, and the information of the blood sampling tube can be identified. If the pairing result is multiple, the barcode cannot be automatically identified, and at this time, manual judgment needs to be performed by means of other information, and the blood collection tube is marked as abnormal. It should be noted that before the defective barcode is paired with the barcode in the matching database, the barcode in the test batch that has been scanned and identified by the barcode scanner 601 needs to be removed from the matching database, so as to reduce the number of samples in the matching database.

Further, the method further includes, after the step of acquiring the first image information of each blood collection tube in the sampling mechanism, the steps of:

acquiring characteristic image parameters of a complete printing area of the bar code through a big data network, and establishing an identification database based on the characteristic image parameters;

importing the first image information into the identification database;

judging whether an area matched with the characteristic image parameter exists in the first image or not;

if not, controlling the second driving motor to rotate by a preset angle;

and repeating the judging steps until the first image has an area matched with the characteristic image parameter.

It should be noted that, after the blood sampling is finished, the blood sampling tube is placed in the test tube rack according to any angle by medical personnel, and therefore the relative position of the bar code in each blood sampling tube is placed on the test tube rack disorderly, so in the process of scanning code identification of the blood sampling tube on the test tube rack through the device, after the same row of blood sampling tubes on the test tube rack are clamped by the sampling mechanism 303, some bar codes on the blood sampling tube may not be located in the area that the bar code scanner 601 can scan, therefore, before the blood sampling tube is scanned and identified by the bar code scanner 601, the bar code of the blood sampling tube needs to be subjected to position correction through an image processing identification technology, and therefore, the bar code on each blood sampling tube is ensured to be in a correct scanning position. Specifically, firstly, training characteristic image parameters of a complete printing area of a bar code through a machine learning algorithm, a deep learning algorithm, a convolutional neural network and the like, and establishing an identification database; wherein the characteristic image parameters comprise texture characteristics, porosity, reflectivity under laser, reflective area and the like of a printing material in the complete printing area of the bar code. Then, obtaining first image information of each blood collection tube through the optical camera 602, importing the first image information into the identification database, identifying whether an area matched with the characteristic image parameter exists in the first image, and if so, indicating that the barcode of the blood collection tube is at a correct code scanning position without adjusting the position of the blood collection tube; if the image information does not exist, it is indicated that the barcode of the blood collection tube is not located at the correct barcode scanning position, and the barcode scanner 601 cannot scan the barcode, and at this time, the second driving motor 301 corresponding to the blood collection tube is controlled to rotate by a preset angle, and then the optical camera 602 is used for shooting the first image information of the blood collection tube until an area matched with the characteristic image parameter exists in the first image, so that the position correction process is performed on the barcode of the blood collection tube, and the information of the blood collection tube can be successfully identified by the blood collection tube scanner.

In addition, the method for determining the defect parameter information of each barcode based on the second image information of the barcode region position of each blood collection tube specifically comprises the following steps:

establishing a defect identification model;

importing the defect image information trained in advance into the defect identification model for training, and further obtaining the trained defect identification model;

and importing the second image information into the trained defect identification model so as to obtain the defect parameter information in the bar code.

It should be noted that a defect identification model may be established by using a convolutional neural network, a machine learning algorithm, a deep learning algorithm, and the like, so as to identify defect parameter information of the region position where the barcode is located on the second image, where the defect parameter information includes the area size of the defect, the outline shape of the defect, and coordinate values of each boundary of the defect.

While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. The utility model provides a heparin tube bar code intelligence scanning device, includes the workstation and installs scanning subassembly and sampling subassembly on the workstation, its characterized in that:

the scanning assembly comprises a first guide rail, a first motor is mounted on the first guide rail, a power transmission end of the first motor is connected with a first threaded screw rod in a matching mode, a first sliding block is connected on the first threaded screw rod in a matching mode, a first supporting column is fixedly connected to the top of the first sliding block, a first mounting plate is fixedly connected to the top of the first supporting column, a notch is formed in the first mounting plate, two bearing seats are fixedly mounted on two sides of the notch, and a rotating shaft is rotatably connected between the two bearing seats;

a Y-shaped swinging piece is fixedly connected to the rotating shaft, the bottom of the Y-shaped swinging piece penetrates through the notch and extends out to the lower part of the first mounting plate, a first fixing plate is fixedly connected to the bottom of the Y-shaped swinging piece, and a bar code scanning assembly and an optical camera are fixedly mounted on the first fixing plate;

the bar code scanning assembly comprises a bar code scanner, a signal converter and a signal processor, the bar code scanner is electrically connected with the signal converter through a lead, the signal converter is electrically connected with the signal processor through a lead, light emitted by the bar code scanner irradiates on a bar code, the light with different reflection intensities is converted into digital signals through the signal converter according to different reflection rates of black and white bar codes in the bar code, and the digital signals are restored into character information through the signal processor, so that the information recorded by the bar code is identified;

be provided with the constant head tank on the workstation, the constant head tank is used for fixing a position blood sampling tube.

2. The intelligent bar code scanning device for blood collection tubes according to claim 1, wherein: the utility model discloses a Y type swing piece, including Y type swing piece top, first regulation pole, first articulated seat and second articulated seat, the both sides at Y type swing piece top articulate respectively, the both sides of first mounting panel are provided with first mounting bracket and second mounting bracket respectively, fixed mounting has first fine setting cylinder on the first mounting bracket, the output cooperation of first fine setting cylinder is connected with first regulation pole, the end of first regulation pole with first articulated seat fixed connection, fixed mounting has second fine setting cylinder on the second mounting bracket, the output cooperation of second fine setting cylinder is connected with the second and adjusts the pole, the end of second regulation pole with the articulated seat fixed connection of second.

3. The intelligent bar code scanning device for blood collection tubes according to claim 1, wherein: the sampling assembly comprises two support frames fixedly arranged on the workbench, an I-shaped steel beam is fixedly arranged on each of the two support frames, a first slide rail is fixedly arranged on the I-shaped steel beam, a first slide block is connected onto the first slide rail in a sliding manner, a first driving motor is fixedly arranged on the first slide block, the output end of the first driving motor is connected with a first rotating shaft in a matching manner, a first gear is connected onto the first rotating shaft in a matching manner, a first rack is fixedly arranged on the I-shaped steel beam, the first gear is in meshing transmission with the first rack, a cross beam is further erected between the two first slide blocks, an L-shaped fixing member is fixedly arranged on the cross beam, a second guide rail is fixedly arranged on the L-shaped fixing member, a second motor is arranged on the second guide rail, and the output end of the second motor is connected with a second threaded lead screw in a matching manner, and a second sliding block is connected to the second threaded screw rod in a matching manner.

4. The intelligent bar code scanning device for blood collection tubes according to claim 3, wherein: fixedly connected with connecting rod on the second sliding block, the terminal fixedly connected with second mounting panel of connecting rod, the second mounting panel is provided with a plurality of second driving motor according to predetermineeing the interval along length direction, the output cooperation of rotating electrical machines is connected with the second rotation axis, the end cooperation of second rotation axis is connected with sampling mechanism.

5. The intelligent bar code scanning device for blood collection tubes according to claim 4, wherein: sampling mechanism includes circular mounting bracket, the bottom of circular mounting bracket is provided with six groups of support guide rails along the circumference array, sliding connection has the support slider on the support guide rail, and is in the both ends of support guide rail are provided with first mounting bar and second mounting bar respectively, be provided with the guide bar between first mounting bar and the second mounting bar, sliding connection has the slider on the guide bar, just the slider still with support slider fixed connection, it is equipped with expanding spring still to overlap on the guide bar, expanding spring's one end with slider fixed connection, expanding spring's the other end with second mounting bar fixed connection, the center department of circular mounting bracket bottom is provided with the magnetic shoe, it is equipped with the magnetic shield still to cover on the circular mounting bracket.

6. The intelligent bar code scanning device for blood collection tubes according to claim 5, wherein: the sliding block is fixedly connected with one end of the clamping rod, the other end of the clamping rod is fixedly connected with the clamping block, the clamping block is provided with an arc-shaped groove, and the arc-shaped groove is matched with the outer contour of the blood sampling tube.

7. The intelligent bar code scanning device for blood collection tubes according to claim 5, wherein: a plurality of infrared sensors are arranged on the supporting guide rail along the length direction and used for detecting the position information of the sliding block.

8. A method for identifying a bar code intelligent scanning device of a blood collection tube, which is applied to the bar code intelligent scanning device of the blood collection tube according to any one of claims 1 to 7, and is characterized by comprising the following steps:

acquiring first image information of each blood collection tube on a sampling mechanism, and extracting second image information of a code area position of each blood collection tube barcode based on the first image information;

determining defect parameter information of each bar code based on second image information of the position of the code area where each bar code of the blood collection tube is located;

generating corresponding scanning parameter information based on the defect parameter information of each bar code;

and controlling a scanning component to scan and identify the bar codes of the blood sampling tubes according to preset scanning parameters based on the scanning parameter information.

9. The method according to claim 8, wherein generating corresponding scan parameter information based on the defect parameter information of each barcode comprises:

judging whether one or more bar codes in the bar codes are completely lost or not;

if the defect that the bar code is completely lost exists, matching and identifying the bar code through a matching screening method;

if the defect that the bar code is completely lost does not exist, judging whether the defect existing in the bar code is communicated with the upper boundary and the lower boundary of the bar code or not;

if the defect is not communicated with the upper boundary and the lower boundary of the bar code, scanning by adopting a whole-section scanning method, determining a whole datum line scanning angle of one-time scanning based on the defect parameter information, and controlling a scanning assembly to carry out whole-section scanning identification on the bar code according to a preset scanning angle based on the whole datum line scanning angle;

if the defect is communicated with the upper boundary and the lower boundary of the bar code, a multi-segment scanning method is adopted for scanning, each datum line scanning angle of multi-segment scanning is determined based on the defect parameter information, and the scanning assembly is controlled to sequentially carry out segmented scanning identification on the bar code according to the preset scanning angle based on each datum line scanning angle.

10. The identification method of the intelligent barcode scanning device for the blood collection tube according to claim 9, wherein if the barcode is completely lost, the barcode is matched and identified by a matching screening method, and the method specifically comprises the following steps:

acquiring all bar code information in the current inspection batch in a shared database, and extracting matching characteristic information of each bar code area in all bar codes; the matching characteristic information comprises width information of each bar code and position sequence information of each bar code;

establishing a bar code matching database, and importing the matching characteristic information into the matching database;

acquiring the identified bar codes in the current inspection batch, and removing the identified bar codes from the matching database;

obtaining effective characteristic information of a bar code with defects, wherein the effective characteristic information comprises width information and position sequence information of the bar code which is not completely lost;

matching the effective characteristic information with matching characteristic information in a matching database one by one to obtain a matching result;

if the number of the matching results is only one, binding the bar code information in the matching database with the bar code with the defect;

if the matching result is more than one, outputting no-solution information and marking the blood collection tube as abnormal.

Images