CN111505320B - Sample rack transport device, sample analysis system and control method - Google Patents
Sample rack transport device, sample analysis system and control method Download PDFInfo
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- CN111505320B CN111505320B CN201910100215.3A CN201910100215A CN111505320B CN 111505320 B CN111505320 B CN 111505320B CN 201910100215 A CN201910100215 A CN 201910100215A CN 111505320 B CN111505320 B CN 111505320B
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000004458 analytical method Methods 0.000 title claims abstract description 10
- 230000007246 mechanism Effects 0.000 claims abstract description 112
- 239000000872 buffer Substances 0.000 claims description 80
- 239000012160 loading buffer Substances 0.000 claims description 51
- 238000012546 transfer Methods 0.000 claims description 19
- 230000001960 triggered effect Effects 0.000 claims description 9
- 230000002457 bidirectional effect Effects 0.000 claims description 7
- 238000007689 inspection Methods 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 17
- 230000032258 transport Effects 0.000 description 23
- 238000012360 testing method Methods 0.000 description 12
- 210000000078 claw Anatomy 0.000 description 5
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 238000013102 re-test Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000000684 flow cytometry Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/00584—Control arrangements for automatic analysers
- G01N35/00722—Communications; Identification
- G01N35/00732—Identification of carriers, materials or components in automatic analysers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/00584—Control arrangements for automatic analysers
- G01N35/0092—Scheduling
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/02—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor using a plurality of sample containers moved by a conveyor system past one or more treatment or analysis stations
- G01N35/026—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor using a plurality of sample containers moved by a conveyor system past one or more treatment or analysis stations having blocks or racks of reaction cells or cuvettes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/00584—Control arrangements for automatic analysers
- G01N35/00722—Communications; Identification
- G01N35/00732—Identification of carriers, materials or components in automatic analysers
- G01N2035/00792—Type of components bearing the codes, other than sample carriers
- G01N2035/00801—Holders for sample carriers, e.g. trays, caroussel, racks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/00584—Control arrangements for automatic analysers
- G01N35/00722—Communications; Identification
- G01N35/00732—Identification of carriers, materials or components in automatic analysers
- G01N2035/00821—Identification of carriers, materials or components in automatic analysers nature of coded information
- G01N2035/00831—Identification of carriers, materials or components in automatic analysers nature of coded information identification of the sample, e.g. patient identity, place of sampling
Abstract
The application discloses sample frame conveyer, sample analysis system and control method, including control system and by two at least track modules that forward backward links up in order, each track module includes outer track and interior track, each interior track includes the feeding district that can the forward transportation sample frame, outer track can forward and reverse transportation sample frame, and both ends of whole track and two all be equipped with the track change mechanism between the track module, the track change mechanism can inside and outside two-way transportation sample frame between the track, control system has the back review mode in the back review mode, control system control outer track backward motion makes the sample frame that the forward passed through current track module feeding district can be through the backward motion the outer track back to the feeding district of target track module. The control system has a back-off rechecking mode, can realize the back-off rechecking of the sample, and meets the specific requirements for sample detection.
Description
Technical Field
The invention relates to the technical field of sample analysis pipelines and full-automatic sample processing, in particular to a sample rack conveying device and a sample analysis pipeline.
Background
Existing sample analyzer pipelines typically include a loading platform for storing samples to be tested, an unloading platform for storing the samples to be tested, and a sample rack transport device coupled to the loading platform and the unloading platform. For the existing sample rack conveying device, in order to improve the conveying efficiency of the sample rack, a scheme of multiple tracks is generally adopted.
In the prior art, the rail module of the sample rack transport device comprises an inner rail and an outer rail which are parallel to each other. The inner rail is divided into an inner rail transferring area, a loading area, a feeding area and an unloading area, and a sample analyzer is arranged at the outer side of the feeding area. The outer track includes an outer track change region. The lateral arrangement of the zones results in longer track length and larger occupied space.
Disclosure of Invention
The invention provides a novel sample rack conveying device and a sample rack conveying assembly line.
The invention provides a sample rack conveying device, which comprises a control system and at least two track modules which are sequentially connected from front to back, wherein each track module comprises an outer track and an inner track, each inner track comprises a feeding area capable of positively conveying a sample rack, the outer track can positively convey the sample rack, a track changing mechanism is arranged at the front end of the foremost track module and between two adjacent track modules, the track changing mechanism is connected with the inner track and the outer track and can bidirectionally convey the sample rack between the inner track and the outer track, and each inner track also comprises a loading buffer area capable of accommodating multiple rows of sample racks and an unloading buffer area capable of accommodating multiple rows of sample racks; for each track module, the loading buffer zone is connected with the front end of the feeding zone and the track changing mechanism positioned in front of the track module, and the unloading buffer zone is connected with the rear end of the feeding zone and the track changing mechanism positioned behind the track module; each feeding region and each outer rail are transversely arranged, and each loading buffer region and each unloading buffer region are longitudinally arranged; the control system is in control connection with each outer rail, each inner rail and each rail changing mechanism.
The transversely disposed feed zone has opposite ends, a front end and a rear end, respectively, and the sample rack moves from the front end to the rear end as the feed zone positively transports the sample rack. The loading buffer area is connected with the front end of the track module feeding area and the track changing mechanism in front of the track module, and the unloading buffer area is connected with the rear end of the track module feeding area and the track changing mechanism behind the track module. The load buffer may be directly connected to the track change mechanism or indirectly connected through a track. The unloading buffer can be directly connected with the track transfer mechanism or indirectly connected through a track.
The outer rail is a bidirectional rail capable of transporting the sample rack forward and backward, the control system is provided with a rechecking mode, in the rechecking mode, the control system controls the outer rail to move forward or backward, so that the sample rack passing forward through the feeding area of the current rail module can move to the target rail module through the outer rail and the rail changing mechanism, and rechecking is carried out in the feeding area of the target rail module.
The current track module and the target track module are the same track module, so that local rechecking is realized.
The current track module is different from the target track module, so that the machine changing rechecking is realized. The target track module may be located in front of the current track module or may be located behind the current track module.
The first sensor is connected with the control system, and when the sample rack accommodated in the loading buffer zone is full, the first sensor sends a trigger signal for the full buffer zone to the control system; the unloading buffer zone is provided with a second sensor connected with the control system, and when the sample rack accommodated in the unloading buffer zone is full, the second sensor sends a trigger signal for the full buffer zone to the control system.
Each track module further comprises a loading connection track and an unloading connection track, for each track module, the loading buffer zone is connected with the track changing mechanism positioned in front of the track module through the loading connection track, the unloading buffer zone is connected with the track changing mechanism positioned behind the track module through the unloading connection track, and the loading connection track and the unloading connection track are transversely arranged. Loading and unloading connecting tracks, such as belts.
And a detector capable of acquiring the identity information of the sample rack is arranged at the outlet of the unloading buffer area.
The feeding zone is a bi-directional track capable of transporting the sample rack in a forward direction and in a reverse direction.
The track changing mechanism comprises an inner track changing inlet track and an outer track changing inlet track which are transversely arranged, and the inner track changing inlet track is connected with the inner track and can be switched to a position corresponding to the outer track; the outer track changing inlet track is connected with the outer track and can be switched to a position corresponding to the inner track. Both the inner and outer derailment inlet tracks are accessible to the sample rack.
A sample analysis system comprises a sample analyzer and a sample rack conveying device, wherein each feeding area of the sample rack conveying device is correspondingly provided with the sample analyzer. Typically, each feed zone is provided with a sample analyzer.
The sample analysis system further comprises an unloading platform and a loading platform, wherein the loading platform is arranged at the front end of the foremost track module, and the unloading platform is arranged at the front end of the foremost track module or the rear end of the rearmost track module. The loading platform is used for storing the sample to be detected. The unloading platform is used for storing the inspected samples. The loading platform and the unloading platform can be connected with each other at the same side, namely, the track changing mechanism at the front end of the forefront track module is connected with the unloading platform, and then the loading platform is connected with the unloading platform. The loading platform and the unloading platform can be connected with the loading platform by a rail transfer mechanism at the front end of the foremost rail module, and the rear end of the rearmost rail module is connected with the unloading platform.
A control method of a sample rack transport device, the device comprising a control system and at least two track modules sequentially joined from front to back, each track module comprising an outer track and an inner track, each inner track comprising a feed zone capable of transporting sample racks in a forward direction, the outer track being capable of transporting sample racks in a forward direction and a reverse direction, track changing mechanisms being provided at the front end of the foremost track module between two adjacent track modules, the track changing mechanisms connecting the inner track and the outer track and being capable of bi-directionally transporting sample racks between the inner track and the outer track, the method comprising:
receiving a control instruction of rechecking;
determining a rechecking movement route between the current track module and the target track module;
transferring the sample rack on the inner rail to the outer rail through the rail transfer mechanism;
controlling the outer track on the rechecking movement route to move reversely;
and controlling the sample rack which positively flows out of the feeding area of the current track module to move to the feeding area of the target track module along the rechecking movement route.
In the control method, a transverse loading buffer area is arranged on each track module, so that the loading buffer area is connected with the front end of the feeding area and the track changing mechanism positioned in front of the track module;
and arranging a transverse unloading buffer zone in each track module, and enabling the unloading buffer zone to be connected with the rear end of the feeding zone and the track transferring mechanism positioned at the rear of the track module.
And when the current track module and the target track module are the same track module, controlling the sample rack to retract to a feeding area of the current track module along an unloading buffer area of the current track module, the track changing mechanism positioned behind the current track module, an outer track of the current track module which moves reversely, the track changing mechanism positioned in front of the current track module and a loading buffer area of the current track module during rechecking.
The current track module and the target track module are different, the target track module is positioned in front of the current track module, and during rechecking, the sample rack is controlled to fall back to a feeding area of the target track module after being along an unloading buffer area of the current track module, a track changing mechanism positioned behind the current track module, an outer track of the reverse movement of the target track module, a track changing mechanism in front of the target track module and a loading buffer area of the target track module.
Detecting whether a first sensor arranged in the loading buffer area is triggered or not, if yes, stopping scheduling the sample rack to enter the loading buffer area; and if not, scheduling the sample rack to enter the loading buffer area.
Detecting whether a second sensor arranged in the unloading buffer area is triggered or not, if yes, stopping scheduling the sample rack to enter the unloading buffer area; and if not, scheduling the sample rack to enter the unloading buffer area.
The beneficial effects of the invention are as follows: 1) The throughput capacity of the sample rack can be effectively increased by arranging the loading buffer area and the unloading buffer area, and the transverse space of the whole assembly line can be saved by longitudinally arranging the loading buffer area and the unloading buffer area. 2) The control system has a re-detection mode, can realize the re-detection of the sample, and meets the specific requirements of the user on the sample detection.
Drawings
Fig. 1 is a schematic view of the structure of a rail module of the sample rack transport apparatus of the present embodiment;
fig. 2 is a schematic structural view of a sample rack transport line of the present embodiment;
FIG. 3 is a schematic flow chart of pushing a sample rack in a buffer area by a control pushing mechanism;
fig. 4 is a schematic perspective view of the pushing mechanism according to the present embodiment;
fig. 5 is a schematic perspective view of the sample rack of the present embodiment;
fig. 6 is a schematic view of another construction of a rail module of a specimen rack transport apparatus.
Detailed Description
The invention will be described in further detail below with reference to the drawings by means of specific embodiments.
As shown in fig. 1 to 3, a sample rack transport device is applied to a sample rack transport line, and comprises at least two track modules connected in sequence. Each track module comprises an inner track and an outer track 5. The inner rail comprises a feeding zone 3, and a sample analyzer 10 can be arranged on the outer side of the feeding zone 3, wherein the sample analyzer 10 is a sample analyzer such as a blood routine instrument, a CRP instrument, a pusher instrument, a saccharification instrument, a reader instrument or a flow cytometry instrument, and each rail module is usually corresponding to one sample analyzer. The outer rail 5 is a bidirectional rail capable of transporting the sample rack in the forward direction, which is the transport direction of the pipeline, and transporting the sample rack in the reverse direction. The rail changing mechanism is arranged at two ends of the whole rail and between two adjacent rail modules, the rail changing mechanism is connected with the inner rail and the outer rail, the rail changing mechanism can transfer a sample rack on the inner rail to the outer rail and also can transfer a sample rack on the outer rail to the inner rail, namely, the rail changing mechanism can realize bidirectional transfer between the inner rail and the outer rail. The track change mechanism is provided with an inner track change inlet track 7 and an outer track change inlet track 8, wherein the inner track change inlet track 7 can be connected with the inner tracks of two adjacent track modules, and the outer track change inlet track 8 can be connected with the outer tracks of the two adjacent track modules. When the sample frame is transferred from the inner rail to the outer rail, the inner rail transfer inlet rail and the outer rail transfer inlet rail synchronously move outwards until the inner rail transfer inlet rail is switched to correspond to the outer rail; when the sample frame is transferred from the outer rail to the inner rail, the inner rail-changing inlet rail and the outer rail-changing rail synchronously move inwards until the outer rail-changing inlet rail is switched to correspond to the inner rail.
Each track module is sequentially connected from front to back, each track module can be respectively defined as a first track module and a second track module … nth track module, the track module positioned at the front is the first track module, the track module positioned at the rear is the nth track module, for the ith track module in the middle, the ith-1 track module is positioned at the front, and the (i+1) track module is positioned at the rear. Typically, the sample rack is fed into the pipeline from the first track module at the forefront and out of the pipeline from the nth track module at the rearmost, according to the transport direction of the pipeline. The forward direction may be a direction from front to back. The reverse direction may be a back-to-front direction. The track changing mechanism can be arranged at the front end of the first track module, the rear end of the nth track module and between two adjacent track modules. Of course, the track changing mechanism may be provided only at the front end of the first track module and between two adjacent track modules. For two adjacent track modules, the rear end of the front track module is connected with the front end of the rear track module through a track changing mechanism. For any one track module, a track module adjacent thereto and located in front thereof may be defined as an upper section track module, and a track module adjacent thereto and located behind thereof may be defined as a lower section track module.
The sample rack transport device comprises a control system which controls each inner rail, each outer rail and each rail changing mechanism. The control system may have a recheck mode in which a sample rack on the current track module can be moved to the target track module, which is rechecked in the feed zone of the target track module. Specifically, the control system controls the outer track and the track changing mechanism on the rechecking movement route, so that the sample rack passing through the feeding area of the current track module in the forward direction can move to the target track module through the rechecking movement route, and rechecking is performed in the feeding area of the target track module.
The recheck mode may include a local recheck mode and a change-over recheck mode. In the local recheck mode, the current track module and the target track module are the same track module, which includes two cases: the feeding area is retracted for rechecking, namely, the control system makes the feeding area move reversely, so that the sample rack directly reversely retracts on the feeding area; and reversely winding the outer rail for reinspection, namely reversely moving the outer rail of the current rail module by the control system, and returning the sample frame detected by the sample analyzer of the feeding area of the current rail module to the feeding area of the current rail module again for reinspection through the rail transfer mechanism and the reversely moving outer rail.
In the re-inspection mode, the target track module is located in front of or behind the current track module. The target track module and the current track module may be adjacent or may be separated by at least one track module. In this mode, the control system moves the outer rail between the current rail module and the target rail module in a forward or reverse direction, enabling the sample rack on the current rail module to pass through the outer rail and the rail changing mechanism and finally to move to the feeding area 3 of the target rail module. The machine changing and rechecking mode comprises three conditions: unloading a sample frame of the current track module to a track changing mechanism, and then forward connecting to a target track module (a lower section track module) positioned at the rear for rechecking; unloading a sample frame of the current track module to a track changing mechanism, and reversely moving to a target track module (an upper section track module) positioned in front to recheck; the sample rack of the current track module is unloaded to the track changing mechanism, then the outer track moves forward to the target track module (lower section track module) positioned at the rear for rechecking. The re-inspection is aimed at the same detection item, and the re-inspection of the same detection item can be completed in the same track module or in different track modules.
The inner track of each track module may also comprise a loading buffer zone 2 capable of accommodating one or more rows of sample racks and an unloading buffer zone 4 capable of accommodating one or more rows of sample racks, the loading buffer zone 2 being located in front of the feeding zone 3 and connecting the feeding zone 3 and the track change mechanism located in front of the track module. The unloading buffer zone 4 is positioned behind the feeding zone 3 and is connected with the feeding zone 3 and the track transfer mechanism behind the track module. The loading buffer 3 and the unloading buffer 4 may be perpendicular to the outer track 5, while the feeding zone 3 is parallel to the outer track 5, i.e. the loading buffer 2 and the unloading buffer 4 are arranged longitudinally and the feeding zone 3 and the outer track 5 are arranged transversely.
As shown in fig. 1 to 3, a sample rack transporting device comprises a plurality of track modules 50, 51, 52 which are sequentially connected from front to back, wherein rail changing mechanisms are arranged at two ends of the whole track and between two adjacent track modules. The track module comprises inner and outer tracks 5, 15, 25. The inner track comprises a load buffer 2, 12, 22 located in front, an unload buffer 4, 14, 24 located in rear and a feed zone 3, 13, 23 located between the load buffer and the unload buffer. The outer rails 5, 15, 25 are bi-directional rails that enable forward and reverse movement, i.e. the outer rails can transport the sample rack forward from front to back, and also backward from back to front. The track change mechanism is connected with the inner track and the outer track, and can transfer the sample rack on the outer track to the inner track and also can transfer the sample rack on the inner track to the outer track. The derailment mechanism has an inner derailment entrance track 7, 17, 27 and an outer derailment entrance track 8, 18, 28, the inner derailment entrance track 7, 17, 27 engaging the inner track of two adjacent track modules, and the outer derailment entrance track 8, 18, 28 engaging the outer track of two adjacent track modules. Each load buffer zone 2, 12, 22 can be connected to an inner track-change entrance rail of the track-change mechanism via a load connection rail 6, 16, 26, and each unload buffer zone 4, 14, 24 can be connected to an inner track-change entrance rail of the track-change mechanism via an unload connection rail 9, 19, 29. Of course, the loading buffer zone 2 can also be directly connected with the inner track-changing inlet track 7 of the track-changing mechanism in front of the track module; the unloading buffer 4 can also be connected directly to the inner track-change entrance track of the track-change mechanism behind the track module, as shown in fig. 6.
As shown in fig. 1, when the sample rack does not perform the detection operation on the current track module, it includes three scheduling modes:
a) The sample rack enters from the outer rail inlet rail 8, is transported straight through the outer rail 5 to the rail module that is engaged with the rear end of the current rail module.
b) The sample rack enters from the inner orbital transfer entrance track 7, is orbital transferred to the outer orbital transfer entrance track 8 by the orbital transfer mechanism, and is transported to the track module engaged with the rear end of the current track module by the outer track 5 in the forward direction.
c) The sample rack enters from the left side of the outer rail 5, is transported through the outer rail 5 in reverse direction to the rail module that is engaged with the front end of the current rail module.
Through the forward movement and the reverse movement of the outer rail, the bidirectional straight-through transportation between two adjacent rail modules can be realized.
When the sample rack needs to perform detection operation on the current track module:
a) The sample rack enters from the outer track-changing inlet track 8, is changed to the inner track-changing inlet track 7 through the track-changing mechanism, and is pushed to the loading buffer zone 2 of the current track module to wait for detection.
b) The sample rack enters from the inner track-changing inlet track 7 and is directly pushed into the loading buffer zone 2 of the current track module to be detected and waited.
c) The sample rack enters from the left side of the outer rail 5, reversely passes through the outer rail 5, reaches the outer rail-changing inlet rail 8, enters the inner rail-changing inlet rail 7 after being rail-changed by the rail-changing mechanism, and then is pushed to enter the loading buffer zone 2 of the current rail module for detection waiting.
The sample rack enters the feeding area 3 from the loading buffer area 2 for measurement: loading the sample rack into a feeding area 3 from a loading buffer area 2, and sequentially sending the sample rack into the positions of detection, bar code scanning, sample mixing, sampling and the like of a test tube of the sample analyzer in combination with the state of the sample analyzer 10; when the samples in the sample rack are detected and the re-detection is required by the formulated rule, the sample rack can reversely move on the feeding area 3, and the samples are mixed, sampled and measured again; after the sample analyzer 10 detects the sample, the sample is sent to the unloading buffer zone 4 through the feeding zone 3. Of course, when the established rule needs to be re-detected, the sample rack can also pass through the outer track to reversely wrap the re-detection or change the machine for re-detection.
The unload buffer zone 4 may hold a plurality of rows of sample racks waiting for further allocation and scheduling. The unloading buffer 4 can individually push a row of sample racks to the unloading connecting track 9 by a pushing mechanism. The sample rack can be sent out of the current track module via the unloading connecting track 9.
As shown in fig. 2, the sample rack has a variety of transport paths:
first transport path: the sample rack enters from the outer rail inlet rail 8 and is conveyed straight through the outer rail 5 of the first rail module 50 and out from the left side (rear end) of the outer rail, the path being a transport mode straight through to the left.
In the second transport path, the sample rack enters from the left side of the outer rail 5 of the first rail module 50, passes through the outer rail 5 in the reverse direction, and is output from the right side (front end) of the outer rail. The path is a right through transport.
In the third transportation path, the sample rack enters from the outer track change entrance track 8, is changed by the track change mechanism, the outer track change entrance track 8 is connected with the connecting track 6, the sample rack sequentially passes through the loading connecting track 6, the loading buffer zone 2, the feeding zone 3, the unloading buffer zone 4, the unloading connecting track 9 and the inner track change entrance 17 of the first track module 50 from the outer track change entrance track 8, is changed by the track change mechanism, is connected with the outer tracks 5 and 15 by the inner track change entrance track 17, is directly connected with the outer track 15 of the second track module 51, and is output from the left side of the outer track 15. In this path, the sample rack enters from the right side, and after the test is completed, the sample rack is output from the left side.
Fourth transportation path, sample frame gets into from outer track entry track 8, through track change mechanism track change, outer track entry track 8 links up with connecting track 6, and the sample frame passes through loading connecting track 6, loading buffer zone 2, feeding 3 district, unloading buffer zone 4, unloading connecting track 9 and interior track entry 17 of first track module in order from outer track entry track 8, then by track change mechanism track change, interior track entry track 17 links up with outer tracks 5 and 15, again reverse direct through outer track 5 of first track module 50, exports from the right side of this outer track 5. In this path, the sample rack enters from the right side, and after the test is completed, the sample rack is output from the right side.
In the fifth transportation path, the sample rack enters from the outer track-changing inlet track 8, the outer track-changing inlet track 8 is connected with the connecting track 6 through the track changing mechanism track changing, the sample rack sequentially passes through the loading connecting track 6, the loading buffer zone 2, the feeding zone 3, the unloading buffer zone 4, the unloading connecting track 9, the inner track-changing inlet track 17 of the first track module 50 from the outer track-changing inlet track 8, the outer track-changing inlet track 8 and the loading connecting track 6 (the track changing mechanism track changing, the outer track-changing inlet track 8 and the connecting track 6 are connected, the sample rack enters the loading connecting track 6 from the outer track-changing inlet track 8) and the loading buffer zone 2, and finally returns to the feeding zone 3 of the first track module 50, so that the local rollback rechecking is realized.
A sixth transportation path is that a sample rack enters from the outer track change inlet track 8, the outer track change inlet track 8 is connected with the connecting track 6 through track change mechanism track change, the sample rack sequentially passes through the loading connecting track 6, the loading buffer zone 2, the feeding zone 3, the unloading buffer zone 4, the unloading connecting track 9, the inner track change inlet track 17 of the inner first track module, the loading connecting track 16 and the loading buffer zone 12 of the second track module 51 from the outer track change inlet track 8, and finally is transported to the feeding zone 13 of the second track module 51, so that the machine change rechecking is realized.
Seventh transportation path, sample rack gets into from outer track entry track 18, through track change mechanism track change, outer track entry track 18 links up with connecting track 16, the sample rack passes through the loading connecting track 16 of second track module 51 from outer track entry track 18 in proper order, load buffer zone 12, feed zone 13, unload buffer zone 14, unload connecting track 19, the outer track 15 of inner track entry track 27 second track module 51 (by track change mechanism track change, inner track entry track 27 links up with outer tracks 25 and 15 after getting into outer track 15 from inner track entry track 27), outer track 5 of first track module 50, outer track entry track 8, load connecting track 6 (by track change mechanism track change, outer track entry track 8 links up with connecting track 6, the sample rack gets into load connecting track 6) and load buffer zone 2 from outer track entry track 8, finally return to feed zone 3 of first track module 50 and realize the back reinspection of change.
In the eighth transportation path, the sample rack enters from the outer track entry track 28, the outer track entry track 28 is engaged with the connecting track 26 by the track changing mechanism, the sample rack passes from the outer track entry track 28 through the loading connecting track 26, the loading buffer zone 22, the feeding zone 23, the unloading buffer zone 24, the unloading connecting track 29, the inner track entry track 37 of the third track module 52, the outer track 25 of the third track module 52 (the sample rack enters from the inner track entry track 37 into the outer track 25 after being engaged with the outer track 25 by the track changing mechanism), the outer track entry track 28, the outer track 15 of the second track module 51, the outer track entry track 18, the outer track 5 of the first track module 50, the outer track entry track 8, the loading connecting track 6 (the outer track entry track 8 is engaged with the connecting track 6 by the track changing mechanism), the sample rack enters the connecting track 6) and the loading zone 2 of the third track module 52, and finally returns to the feeding zone 3 of the first track module 50, thereby realizing the double-sided inspection.
Because the outer rail of each rail module is a bidirectional rail, the control system controls each inner rail, each outer rail and each rail changing mechanism, so that rightward straight-through transportation, leftward straight-through transportation, local reinspection, replacement reinspection, local rollback reinspection and replacement rollback reinspection among different rail modules of the sample rack can be realized.
When the sample rack is scheduled, the following factors need to be considered: 1) The number of the sample racks on the loading buffer area is preferentially ensured without reducing the speed, and the requirement of continuous transportation of the sample racks on the assembly line can be met; 2) The retest sample comprises a blood routine sample, a CRP sample, a pushing piece sample and a saccharification sample retest; 3) Whether the unloading buffer area is full or not, and the speed can be influenced by the full unloading buffer area; 4) And unloading samples, and conveying the samples from the unloading buffer area to an unloading platform through an unloading connecting track. Sample rack scheduling is performed according to the factors and the load condition of each sample analyzer on the pipeline through path calculation. When the path is occupied, the sample rack to be scheduled is temporarily stopped on the unloading buffer.
The path calculation adopts region segmentation, so that the use efficiency of the outer track is increased. The whole outer track on the assembly line is divided into an occupied area and a non-occupied area. Path calculation can be carried out again in the new scheduling, and if the occupied area is needed to be used, waiting is carried out; if the unoccupied zone is used, use can continue.
In this embodiment, the loading buffers 2, 12, 22 and the unloading buffers 4, 14, 24 are designed with enough space to accommodate multiple rows (at least two rows) of sample racks, which can stay in both the loading buffers and the unloading buffers without affecting the movement of the sample racks of the feeding section 3 and the outer rail 5.
As shown in fig. 1 to 5, a pushing mechanism may be disposed on the side of the loading buffer, and the pushing mechanism may push the sample racks from the loading buffer 2 onto the feeding region 3, where the pushing distance is the width of a row of sample racks. The loading buffer area is provided with a first sensor SEN, the pushing mechanism detects whether the first sensor is triggered after pushing the sample rack, if so, the loading buffer area is full, and the sample rack is stopped from being conveyed into the loading buffer area 2; if not triggered, scheduling may continue.
The side of the unloading buffer can also be provided with a pushing mechanism which can push the sample racks from the feeding area 3 onto the unloading buffer 4 by a distance of the width of a row of sample racks. The unloading buffer area is provided with a second sensor SEN, after the pushing mechanism pushes the sample rack, whether the second sensor is triggered or not is detected, if the second sensor is triggered, the unloading buffer area is full, and the sample rack is stopped from being conveyed into the unloading buffer area 4; if not triggered, scheduling may continue.
The control system performs sample rack scheduling: when no sample rack is detected in the unloading buffer area, the sample rack on the feeding area can be pushed to the unloading buffer area; when detecting that the unloading buffer area has a sample rack, pushing the sample rack on the feeding area to the unloading buffer area until the unloading buffer area is full; at any time, the sample rack of the unloading buffer area can be pushed to the unloading connecting track, so that the dispatching efficiency of the outer track can be improved; before the sample rack in the feeding area completes the test, loading the sample rack in the buffer area for scheduling; when the multi-row test tube rack is transported to the unloading connecting track, the first row test tube rack and the second row test tube rack can be separated, and the problems that the first row test tube rack has pressure and the belt cannot take away the first row test tube rack and the outer track sample rack is affected to be straight-through due to extrusion of the multi-row test tube rack are solved.
As shown in fig. 4 and 5, the pushing of the sample rack may be achieved by the pushing mechanism 6, and the pushing mechanism 6 may include two pushing claws 61, which are mounted on top of a lifting mechanism 63, the lifting mechanism 63 is slidably mounted on a linear rail 62, and the lifting mechanism 63 is driven by a horizontal driving mechanism 64 to be movable back and forth on the linear rail 62. The lifting mechanism 63 can effect lifting or retraction of the pushing claw 61 in the height direction. The pawl 61 is capable of moving back and forth under the sample rack 7 as it retracts, so that it can rest on the back 71 of the rack, rest on the bottom of the rack, or ride over the rack underneath. When the pusher arm 61 is raised, the pusher arm can rest on the back face 71 of the sample rack, and can push the sample rack forward from the back face 71. When the pushing claw 61 is stopped at the bottom of the sample rack, and lifted, the pushing claw can be clamped into a bottom groove 72 at the bottom of the sample rack, and the single-row or multi-row sample rack is pushed to move back and forth through edges 73 and 74 acting on two sides of the bottom groove. The pushing mechanism 6 may further include an in-place detecting mechanism 65, wherein a contact of the in-place detecting mechanism may be telescopic, when the pushing claw 61 pushes the sample rack, the contact protrudes, and after the sample rack touches the contact, the sample rack represents to move in place; when the outer rail is directly communicated with the sample rack, the contact is retracted out of the rail surface and does not interfere with the movement of the sample rack.
In the process of transporting the sample racks, assuming that the control system knows that the sample racks transported to the feeding area 3 are five racks, if the five racks are transported to the unloading buffer area 4, one rack is manually taken away, the control system can know that four sample racks remain in the unloading buffer area 4 by the moving step number of the pushing mechanism, which is inconsistent with the expectation. If there are samples in the third rack that need to be pushed, the system may misinterpret the fourth rack as the third rack if the test is continued, resulting in a misplacement of the sample rack. In order to control errors, in the prior art, once the number of sample racks in the unloading buffer is found to be inconsistent with the expectation, sample rack conveying is stopped, and the conveying efficiency of the whole assembly line is affected. As shown in fig. 3, in order to solve this problem, a detector may be provided on both sides of the exit of the unloading buffer 4, on both sides of the unloading connecting rail 9, i.e. one of the positions a, b, c, d in fig. 1, which corresponds to the position of the FRID tag on the sample rack, typically on the inner side of the unloading connecting rail 9 (i.e. position c). The identity information of the sample rack is acquired through the detector, so that the situation that the sample rack is misplaced is avoided, and the conveying efficiency of the assembly line is improved. The detector can be a detection mode based on RFID, a detection mode based on a bar code scanner or a detection mode based on other identity information capable of identifying the sample rack.
A sample analysis system includes a sample analyzer and a sample rack transport device, each feed zone of the sample rack transport device corresponding to the sample analyzer. Typically, the feed areas are in one-to-one correspondence with the sample analyzers. The rail transfer mechanism at the front end of the whole rail of the sample conveying device is connected with the loading platform, and the rail transfer mechanism at the rear end of the whole rail is connected with the unloading platform. The loading platform can be used for storing samples to be detected. The unloading platform can be used for storing inspected samples.
The control method of the sample rack transporting device comprises a control system and at least two track modules which are sequentially connected from front to back, wherein each track module comprises an outer track and an inner track, each inner track comprises a feeding area capable of transporting the sample rack forward, the outer track can transport the sample rack forward and backward, track changing mechanisms are arranged between two ends of the whole track and the two track modules, and the track changing mechanisms are connected with the inner track and the outer track and can bidirectionally transport the sample rack between the inner track and the outer track, and the method comprises the following steps: receiving a control instruction of rechecking; determining a rechecking movement route between the current track module and the target track module; controlling the outer track on the rechecking movement route to move reversely; and controlling the test tube rack which positively flows out of the current track module to return to a feeding area of the target track module along the rechecking movement route.
The foregoing is a further detailed description of the invention in connection with specific embodiments, and it is not intended that the invention be limited to such description. It will be apparent to those skilled in the art that several simple deductions or substitutions can be made without departing from the spirit of the invention.
Claims (12)
1. The sample rack conveying device is characterized by comprising a control system and at least two track modules which are sequentially connected from front to back, wherein each track module comprises an outer track and an inner track, each inner track comprises a feeding zone capable of conveying sample racks in the forward direction, the outer track is a bidirectional track capable of conveying the sample racks in the forward direction and the reverse direction, a track changing mechanism is arranged at the front end of the foremost track module and between two adjacent track modules, the track changing mechanism is connected with the inner track and the outer track and can bidirectionally convey the sample racks between the inner track and the outer track, and each inner track further comprises a loading buffer zone capable of accommodating multiple rows of sample racks and an unloading buffer zone capable of accommodating multiple rows of sample racks; each track module further comprises a loading connection track and an unloading connection track, wherein for each track module, the loading buffer zone is connected with the front end of the feeding zone and the loading connection track, and is connected with a track changing mechanism positioned in front of the track module through the loading connection track, and the unloading buffer zone is connected with the rear end of the feeding zone and the unloading connection track, and is connected with the track changing mechanism positioned behind the track module through the unloading connection track; the track changing mechanism comprises an inner track changing inlet track and an outer track changing inlet track which are transversely arranged, and the inner track changing inlet track is connected with the inner track and can be switched to a position corresponding to the outer track; the outer track changing inlet track is connected with the outer track and can be switched to a position corresponding to the inner track; each feeding region and each outer rail are transversely arranged, each loading buffer region and each unloading buffer region are longitudinally arranged, and each loading connecting rail and each unloading connecting rail are transversely arranged; the control system is in control connection with each outer rail, each inner rail and each rail transfer mechanism, and is provided with a reinspection mode which comprises a machine changing reinspection mode; in the re-inspection mode of machine changing, the target track module is positioned in front of or behind the current track module, and the re-inspection mode of machine changing comprises:
unloading a sample frame of the current track module to a track changing mechanism, and then forward passing through the track changing mechanism to the target track module at the rear for rechecking;
unloading a sample frame of the current track module to a track changing mechanism, and reversely moving to the front target track module to recheck after the outer track is moved reversely; or (b)
And unloading the sample rack of the current track module to the track changing mechanism, and then moving the sample rack to the outer track forward to the target track module positioned at the rear for rechecking.
2. The specimen rack transport apparatus of claim 1, wherein the infeed area is a bi-directional track capable of transporting specimen racks in a forward direction and transporting specimen racks in a reverse direction, the review mode further comprising a local review mode in which the current track module and the target track module are the same track module, the local review mode comprising:
the feeding area is retracted for rechecking, and the control system enables the feeding area to reversely move, so that the sample rack directly reversely retracts on the feeding area; or (b)
And reversely winding the outer rail to carry out reinspection, and returning the sample frame detected by the sample analyzer in the feeding area of the current rail module to the feeding area of the current rail module again for reinspection through the rail transferring mechanism and the reversely moving outer rail.
3. The sample rack transport apparatus according to claim 1, wherein the loading buffer is provided with a first sensor connected to the control system, and when the sample rack accommodated in the loading buffer is full, the first sensor sends a trigger signal of full buffer to the control system; the unloading buffer zone is provided with a second sensor connected with the control system, and when the sample rack accommodated in the unloading buffer zone is full, the second sensor sends a trigger signal for the full buffer zone to the control system.
4. The specimen rack transport apparatus of claim 1, wherein a rear end of the rearmost rail module is also provided with the derailment mechanism.
5. The specimen rack transport apparatus according to claim 1, wherein an outlet of the unloading buffer is provided with a detector capable of acquiring specimen rack identity information.
6. A sample analysis system comprising a plurality of sample analyzers, further comprising the sample rack transport device of any one of claims 1-5, each feed zone of the sample rack transport device corresponding to one of the sample analyzers.
7. The sample analysis system of claim 6, further comprising an unloading platform and a loading platform, the loading platform disposed at a front end of the forward-most rail module, the unloading platform disposed at a front end of the forward-most rail module or a rear end of the rearward-most rail module.
8. The control method of the sample rack conveying device is characterized in that the device comprises a control system and at least two track modules which are sequentially connected from front to back, each track module comprises an outer track and an inner track, each inner track comprises a feeding zone capable of conveying sample racks in the forward direction, the outer track can convey the sample racks in the forward direction and the reverse direction, a track changing mechanism is arranged at the front end of the foremost track module and between two adjacent track modules, the track changing mechanism is connected with the inner track and the outer track and can bidirectionally convey the sample racks between the inner track and the outer track, and each inner track further comprises a loading buffer zone capable of accommodating multiple rows of sample racks and an unloading buffer zone capable of accommodating multiple rows of sample racks; each track module further comprises a loading connection track and an unloading connection track, wherein for each track module, the loading buffer zone is connected with the front end of the feeding zone and the loading connection track, and is connected with a track changing mechanism positioned in front of the track module through the loading connection track, and the unloading buffer zone is connected with the rear end of the feeding zone and the unloading connection track, and is connected with the track changing mechanism positioned behind the track module through the unloading connection track; the track changing mechanism comprises an inner track changing inlet track and an outer track changing inlet track which are arranged in parallel with the outer track and the inner track, and the inner track changing inlet track is connected with the inner track and can be switched to a position corresponding to the outer track; the outer track change inlet track is connected with the outer track and can be switched to a position corresponding to the inner track, and the method comprises the following steps:
receiving a control instruction of rechecking;
determining a rechecking movement route between the current track module and the target track module;
the rechecking movement route comprises:
unloading a sample frame of the current track module to a track changing mechanism, and then forward passing through the track changing mechanism to the target track module at the rear for rechecking;
unloading a sample frame of the current track module to a track changing mechanism, and reversely moving to the front target track module to recheck after the outer track is moved reversely; or (b)
And unloading the sample rack of the current track module to the track changing mechanism, and then moving the sample rack to the outer track forward to the target track module positioned at the rear for rechecking.
9. The method of claim 8, wherein each of the feeding sections and each of the outer rails are disposed laterally, each of the loading buffer sections and each of the unloading buffer sections are disposed longitudinally, and each of the loading connecting rails and the unloading connecting rails are disposed laterally.
10. The method of claim 8, wherein the feeding area is a bidirectional track capable of transporting the sample rack forward and backward, the rechecking mode further includes a local rechecking mode in which the current track module and the target track module are the same track module, and the rechecking movement path includes:
the feeding area is retracted for rechecking, and the control system enables the feeding area to reversely move, so that the sample rack directly reversely retracts on the feeding area; or (b)
And reversely winding the outer rail to carry out reinspection, and returning the sample frame detected by the sample analyzer in the feeding area of the current rail module to the feeding area of the current rail module again for reinspection through the rail transferring mechanism and the reversely moving outer rail.
11. The method of claim 8, wherein detecting whether the first sensor provided in the loading buffer is triggered, if so, stopping dispatching the sample rack into the loading buffer; and if not, scheduling the sample rack to enter the loading buffer area.
12. The method of claim 8, wherein detecting whether a second sensor provided in the unloading buffer is triggered, and if so, stopping scheduling the sample rack into the unloading buffer; and if not, scheduling the sample rack to enter the unloading buffer area.
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