CN211826094U - Automatic sample transfer machine - Google Patents
Automatic sample transfer machine Download PDFInfo
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- CN211826094U CN211826094U CN201922179151.9U CN201922179151U CN211826094U CN 211826094 U CN211826094 U CN 211826094U CN 201922179151 U CN201922179151 U CN 201922179151U CN 211826094 U CN211826094 U CN 211826094U
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Abstract
The utility model discloses an automatic sample transfer machine, which comprises a frame, a moving platform arranged on the frame, a liquid-transferring operation assembly and a processor, wherein the moving platform is arranged at the bottom of the frame, the liquid-transferring operation assembly is arranged above the moving platform, the liquid-transferring operation assembly comprises a liquid-transferring mechanical arm, an upper stepping motor for driving the liquid-transferring mechanical arm to do lifting motion, an upper trigger for doing lifting motion under the driving of the upper stepping motor, and an upper reset detection sensor fixed on the frame and used for detecting the height position of the upper trigger so as to judge whether the liquid-transferring mechanical arm is reset to an initial position or not; the processor is used for controlling the upper stepping motor according to the detection signal so as to reset the liquid-transferring manipulator to the initial position. The automatic sample transfer machine can quickly eliminate the step loss error accumulated by the running of the stepping motor for driving the sample and the transfer assembly of the sample rack in long-term repeated activity, avoid the condition of non-alignment in the sample transfer process and improve the working precision.
Description
Technical Field
The utility model belongs to the technical field of the testing and specifically relates to an automatic sample shifts machine.
Background
The pathological analysis is to complete the quantitative analysis of various biochemical indexes (such as blood sugar, blood fat, bilirubin and various catalytic enzymes) in human body through the collected samples of blood or body fluid, etc., and detect the health conditions of liver function, kidney function, myocardial zymogram, electrolytes, etc. At present, the number of biochemical detections in large hospitals and inspection centers is rapidly increasing, and meanwhile, the accurate treatment of many diseases increasingly depends on the high precision of quantitative analysis. Before pathological analysis samples, the samples and reagents need to be uniformly mixed, the operation can be completed by manual shaking or automatic uniform mixing of a machine, but the machine capable of automatically transferring the uniformly mixed samples exists in the market due to the facts that the time for manual uniform mixing and transferring is long, the times of the sample uniform mixing operation are difficult to guarantee and unify, and cross contamination and misoperation are caused by misoperation easily.
In the existing machines, the driving force for transferring the sample rack and moving the mechanical clamping part is generally provided by various motors, one of the motors is a stepping motor, and compared with other motors, the stepping motor has the advantages of high precision and the like, and is suitable for being applied to the occasion of uniformly mixing samples which need to be movably operated and aligned back and forth between reagent tubes with small calibers, but the defect is that the motor can accumulate errors after long-term use, the motor can not reach the position to be reached according to instructions, the sample adding injector and the reagent bottle can not be aligned, the operation for uniformly mixing and transferring the samples can be correctly carried out, and even the samples can be damaged. On the other hand, for reasons of weight reduction or cost saving, the existing shell is generally assembled with the internal components into a whole, but the structure is difficult to disassemble after the shell is assembled, so that troubles are brought to subsequent consumable replacement and maintenance.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem that exists among the above-mentioned background art, provide an automatic sample shifts machine, its transfer subassembly that can eliminate sample, sample frame fast is in long-term repetitive activity for the step error that loses of driven step motor operation accumulation avoids shifting the unable condition of aligning that the sample in-process appears, has improved the work precision.
In order to achieve the above purpose, the technical scheme of the utility model has:
an automatic sample transfer machine comprises a rack, a moving platform, a liquid-transferring operation assembly and a processor, wherein the moving platform is arranged on the rack, the liquid-transferring operation assembly is arranged above the moving platform, the liquid-transferring operation assembly comprises a liquid-transferring mechanical arm, an upper stepping motor for driving the liquid-transferring mechanical arm to move up and down above the moving platform, an upper trigger for driving the upper stepping motor to move up and down, and an upper reset detection sensor which is fixed on the rack and used for detecting the height position of the upper trigger so as to judge whether the liquid-transferring mechanical arm is reset to an initial position; the upper reset detection sensor is used for outputting a detection signal to the processor, and the processor is used for controlling the upper stepping motor according to the detection signal so as to reset the pipetting manipulator to the initial position.
Furthermore, the upper trigger is a light barrier, the upper reset detection sensor is a U-shaped photoelectric sensor, and the light barrier is arranged on the pipetting manipulator; when the pipetting manipulator moves to the initial position, the light blocking sheet blocks the light path of the U-shaped photoelectric sensor.
Further, the moving platform comprises a sample rack transport platform, a lower stepping motor for driving the sample rack transport platform to make reciprocating translation motion below the pipetting operation assembly, a lower trigger for making reciprocating translation motion under the driving of the lower stepping motor, and a lower reset detection sensor fixed at the bottom of the rack and used for detecting the position of the lower trigger so as to judge whether the sample rack transport platform is reset to an initial position or not; the lower reset detection sensor is used for outputting a detection signal to the processor, and the processor is also used for controlling the lower stepping motor according to the detection signal so as to reset the sample rack transport table to an initial position.
Further, moving platform still includes optical axis and the linear bearing of level setting, the optical axis with sample frame transport vechicle is connected and the cover is equipped with linear bearing, step motor passes through the conveyer belt drive down sample frame transport vechicle is along the reciprocal translation of optical axis.
Further, the frame is L type frame, including two blocks of L type curb plates and at least a diaphragm, the diaphragm is violently located between the curb plate, move liquid operation unit mount in on the diaphragm, moving platform locates the L type the flat extension in frame bottom.
Furthermore, a shell is detachably sleeved outside the rack, the shell wraps the pipetting operation assembly, and the side face and the top of the shell are detachably connected; the upper reset detection sensor is exposed out of the shell at a position facing the sample rack transport table.
Further, the liquid transfer manipulator comprises a pressing plate, an upper fork plate, a lower fork plate and a clamping sleeve, wherein the pressing plate is arranged above the upper fork plate, and a first clamping seam is arranged between the pressing plate and the upper fork plate; the upper fork plate and the lower fork plate are vertically superposed, the clamping sleeve is arranged below the lower fork plate, a second crack is arranged between the lower fork plate and the upper end of the clamping sleeve, and the clamping sleeve is used for clamping the sample injection injector.
Further, the upper stepping motor comprises a first upper stepping motor and a second upper stepping motor, and the first upper stepping motor is used for driving the whole pipetting manipulator to do lifting motion; and the second upper stepping motor is used for driving the pressing plate and the upper fork plate to do lifting motion.
Further, the transverse plates comprise a first transverse plate, a second transverse plate and a third transverse plate from top to bottom; the first upper stepping motor is arranged on the first transverse plate, and racks are arranged on the second transverse plate and the third transverse plate and are used for being meshed with a conveying belt on the first upper stepping motor to lift; the second upper stepping motor is arranged on the second transverse plate, the lower fork plate is fixed on the third transverse plate, and racks are arranged on the pressing plate and the upper fork plate and used for the meshing lifting of the conveyor belt on the second upper stepping motor; the rack is also provided with a vertical sliding shaft, and the second transverse plate and the third transverse plate are provided with sliding holes which are sleeved on the vertical sliding shaft.
The utility model discloses an automatic sample shifts machine, through set up the last trigger that is used for replying the initial position and go up the detection sensor that resets on the liquid-transfering operation subassembly that is used for controlling the application of sample syringe, make liquid-transfering operation subassembly all can carry out return calibration operation after the operation finishes at every turn, even consequently, step motor has appeared in the in-process of operation and has lost step error, but influence at every turn all can in time be eliminated, can not influence the operation work of next time, prevent to appear and move the condition that the manipulator can't aim at the object that needs control at the in-process of application of sample and mixing sample, and the work precision is improved.
On this basis can also be provided with the moving platform of control sample frame with move liquid operation assembly function unanimous lower trigger spare and the detection sensor that resets down, realize the error self-correction of machine operation through these structures that set up, alleviateed the work load of earlier stage debugging and later maintenance. In addition, the frame of frame form comes as main support component through using, and the machine shell can dismantle mainly plays the guard action and does not have spare part and install above that, only needs to pull down the shell during follow-up maintenance, and inside each part can expose well, and follow-up consumptive material change, maintenance etc. of being convenient for the maintenance of complete machine is simpler.
Drawings
Fig. 1 is a first exploded view of an automatic specimen transfer machine of the present invention;
fig. 2 is a perspective view of an automatic sample transfer machine according to the present invention;
FIG. 3 is an enlarged view at B in FIG. 2;
FIG. 4 is a second exploded view of an automatic sample transfer machine of the present invention without a housing;
FIG. 5 is an enlarged view taken at A in FIG. 1;
Detailed Description
An automatic sample transfer machine of the present invention will be described in detail with reference to the accompanying drawings for explaining and explaining the scope of the present invention.
Example one
An automatic sample shifts machine as shown in the figure, include frame 1, locate moving platform 4 and liquid-moving operation subassembly 3, the treater on frame 1, moving platform 4 locates frame 1 bottom, liquid-moving operation subassembly 3 locates moving platform 4 top, moving platform 4 is used for controlling the activity of sample frame 2, be equipped with the arrangement hole that is used for installing application of sample syringe 5, reagent bottle or centrifuging tube respectively on the sample frame 2, be equipped with sample frame 2 on moving platform 4's sample frame transport platform 43, liquid-moving operation subassembly 3 is located sample frame 2 top is used for controlling application of sample syringe 5, sample frame 2 passes through on moving platform 4's sample frame transport platform 43 movably locates base 11 of frame 1. The sample storage tube is used for storing a sample to be detected and analyzed, and the mixing tube is used for containing liquid mixed with the sample; the sample adding injector 5 can suck the mixed liquid from the mixed liquid pipe and inject the mixed liquid into the sample storage pipe under the control of the liquid transferring operation component 3, and then the action of sucking and injecting the mixed liquid and the sample liquid is repeated in the sample storage pipe, so that the mixed liquid and the sample liquid are uniformly mixed, and the requirement of dropping the sample on a glass slide is met.
In particular, the liquid-moving operation assembly 3 is arranged above the moving platform 4, and the liquid-moving operation assembly 3 comprises a liquid-moving manipulator, an upper stepping motor for driving the liquid-moving manipulator to move up and down above the moving platform, an upper trigger 31 for driving the upper stepping motor to move up and down, and an upper reset detection sensor 14 fixed on the frame for detecting the height position of the upper trigger to judge whether the liquid-moving manipulator is reset to an initial position; the upper reset detection sensor 14 is configured to output a detection signal to a processor, and the processor is configured to control an upper stepping motor according to the detection signal to reset the pipetting manipulator to an initial position. When the upper trigger 31 moves to the position for triggering the upper reset detection sensor 14, the position represents a preset initial position, and the most suitable position can be set according to the actual situation of each machine at the time of presetting, and the control program can be designed to stop every time the upper trigger moves to the initial position and serve as the starting point of the next movement operation. The upper trigger 31 and the upper reset detection sensor 14 are arranged on the pipetting operation assembly 3 and used for determining and enabling the pipetting operation assembly 3 to return to the initial position after each activity is completed, so that the step loss error caused by the upper stepping motor serving as a driving force is eliminated, and the operation accuracy of the pipetting operation assembly 3 is enhanced. The moving platform 4 for transporting the sample rack 2 can better maintain the accurate operation of the whole machine even if the initial position calibration is not carried out on the premise that the precision of the pipetting module 3 is ensured.
As a preferable scheme of the above embodiment, the direction of the reciprocating motion of the pipetting module 3 on the rack 1 is a vertical direction; the upper reset detecting sensor 14 is located on the frame 1 on the moving path of the upper trigger 31, so that the upper trigger 31 can trigger the upper reset detecting sensor 14 when moving, and when triggering, the upper trigger 31 is shown to have moved to the preset initial position, and the movement can be stopped.
In addition, the upper trigger 31 is a light barrier, the upper reset detection sensor 14 is a U-shaped photoelectric sensor, and the light barrier 31 is arranged on the pipetting manipulator; when the pipetting manipulator moves to the initial position, the light blocking sheet blocks the light path of the U-shaped photoelectric sensor. The photoelectric sensor is a sensor with mature technology and has the advantages of rapid response and low cost. When applied in this solution, in particular, there is an optical path between the transmitter and the receiver of the U-shaped photosensor, and the upper reset detecting sensor 14 is triggered when the optical path is blocked by the upper trigger 31. I.e. the photoelectric sensor is triggered, indicating that the pipetting robot has been transported to the home position.
Example two
Based on the above embodiments, the embodiment provides a preferred solution for an automatic sample transfer machine, the moving platform 4 includes a sample rack transportation stage 43, a lower stepping motor 42 for driving the sample rack transportation stage 43 to perform reciprocating translational motion under the pipetting module 3, a lower trigger 431 for performing reciprocating translational motion under the driving of the lower stepping motor 42, and a lower reset detection sensor 131 fixed at the bottom of the rack 1 for detecting the position of the lower trigger 431 to determine whether the sample rack transportation stage 43 is reset to the initial position; the lower reset detecting sensor 131 is configured to output a detection signal to a processor, and the processor is further configured to control the lower stepping motor 42 according to the detection signal to reset the sample rack transport stage 43 to an initial position. That is, the position of the sample rack transport stage 43 when the lower trigger 431 triggers the lower reset detection sensor 131 is a preset initial position to which the sample rack transport stage 43 needs to be returned, and the initial position is similar to the initial position of the above-mentioned moving control assembly 31, and is not described again.
In the scheme, the lower trigger 431 and the lower reset detection sensor 131 which are matched with each other are preferably arranged in the mobile platform 4, so that the sample rack transport table 43 can perform the reset calibration of the initial position after moving every time, the working accuracy of the sample rack transport table 43 is improved, and the accuracy is improved on the basis of the first embodiment. Because both the trigger and the inductor for initial position calibration are arranged on the two parts of the movable sample adding injector 5 and the sample rack 2, even if a step loss error occurs in the operation process of a certain stepping motor, the influence can be eliminated in time, the influence on the next operation is small, and the condition that each pipe orifice cannot be aligned in the process of sampling, adding samples and uniformly mixing the samples is prevented. The mode greatly improves the operation accuracy, realizes the error self-correction of the machine operation and lightens the workload of early debugging and later maintenance.
As a preferable scheme of the moving platform 4, the moving platform 4 further includes an optical axis 44 and a linear bearing 45, the optical axis 44 is connected with the sample rack transport platform 43 and is sleeved with the linear bearing 45, and the lower stepping motor 42 drives the sample rack transport platform 43 to perform reciprocating translation along the optical axis 44 in the horizontal direction through a conveyor belt. This structure makes the sample rack transport platform 43 move on the fixing base 41 in a translational manner, so as to drive the sample rack 2 to move smoothly.
EXAMPLE III
Based on the above embodiments, the present embodiment provides a preferred automatic sample transfer machine, wherein the rack 1 is an L-shaped frame, and includes two L-shaped side plates 12 and at least one transverse plate, the transverse plate is transversely disposed between the side plates 12, the pipetting module is mounted on the transverse plate, and the moving platform 4 is disposed on the L-shaped flat extension portion at the bottom of the rack. The frame 1 which is integrally in a frame shape is different from the traditional shell type frame 1, mainly comprises side plates 12 and transverse plates, a large margin can be left between each plate and each plate, and the shell type frame 1 is almost in a coating shape; therefore, when in maintenance, the specific conditions of each internal part can be observed more conveniently, and the consumable materials therein can be replaced conveniently. In addition, the material of frame 1 is the preferred aluminum alloy material, and aluminum alloy material intensity is high, and light in weight is firm, utilizes good metal conductivity simultaneously, makes well the ground protection of whole instrument, has better influence to electromagnetic interference and electromagnetic compatibility, thereby reduces because the transmission of the transmission that influences photoelectric signal of step motor 42 operation production about the step motor 42 operation, reduces the interference.
The frame 1 is also detachably sleeved with a shell 6 in a matching way with the frame type frame 1, the shell 6 wraps the pipetting operation assembly 3 partially to play a role in protection, and external foreign matters are prevented from falling into and damaging internal components; and the side surface and the top of the shell 6 are detachably connected. In the scheme, the shell 6 has the same protection function as the traditional rack 1, but because no part is installed on the shell and the constituent blocks on the side surface and the top of the shell 6 are detachably connected, the shell can be simply disassembled block by block during disassembly without influencing the middle part, so that the maintenance is more convenient; the upper reset detection sensor 14 is exposed out of the shell 6 at a position facing the sample rack 2, and the position enables the upper reset detection sensor 14 to be debugged without detaching the shell 6, so that maintenance personnel can conveniently and conveniently debug the sample rack 2, different sample racks 2 may have different preset initial positions, and after the sample rack 2 is replaced, the initial position can be conveniently adjusted by debugging the position of the upper reset detection sensor 14 exposed out, so that good universality is achieved.
As a specific scheme of the pipetting operation assembly 3, the pipetting manipulator comprises a pressure plate 32, an upper fork plate 33, a lower fork plate 34 and a clamping sleeve 37, wherein the pressure plate 32 is arranged above the upper fork plate 33, and a first clamping gap 35 is arranged between the pressure plate 32 and the upper fork plate 33; the upper fork plate 33 and the lower fork plate 34 are vertically stacked, the cutting sleeve 37 is arranged below the lower fork plate 34, a second clamping gap 36 is arranged between the lower fork plate 34 and the upper end of the cutting sleeve 37, and the cutting sleeve 37 is used for clamping the sample adding injector 5; the whole pipetting manipulator is driven by the upper stepping motor to do lifting motion, and the pressing plate 32 and the upper fork plate 33 can be driven by the upper stepping motor to do lifting motion independently. When the whole elevating movement of liquid-transfering manipulator, can drive sample-adding syringe 5 whole upward movement, be convenient for come out in one pipe and stretch into another pipe again on the sample frame 2. In addition, in order to achieve the pumping operation, considering the special shape of the sample injection syringe 5, the top end edges of the piston rod 51 and the injection tube 52 are provided with flanges for fixing, the first slit 35 is used for fixing the flange on the piston rod 51, the second slit 36 is used for fixing the flange on the injection tube 52, during the operation, the flange on the piston rod 51 is plugged into the first slit 35 in the pressure plate 32 and the upper fork plate 33 and moves upwards under the driving of the upper stepping motor, and the injection tube 52 is kept still under the fixing of the lower fork plate 34 and the ferrule 37, so that the effect of sucking and injecting liquid by the reciprocating movement of the piston rod 51 in the injection tube 52 is achieved.
As a preferable scheme of transmission of the upper stepping motor and the pipetting operation assembly, the upper stepping motor comprises a first upper stepping motor 38 and a second upper stepping motor 39, and the first upper stepping motor 38 is used for driving the pipetting manipulator to integrally move up and down; the second upper stepping motor 39 is used for driving the pressing plate 32 and the upper fork plate 33 to do lifting movement. The transverse plates comprise a first transverse plate 15, a second transverse plate 16 and a third transverse plate 17 from top to bottom; the first upper stepping motor 38 is mounted on the first transverse plate 15, and racks are arranged on the second transverse plate 16 and the third transverse plate 17 and used for being meshed with the conveyor belt 19 on the first upper stepping motor to lift; the second upper stepping motor 39 is mounted on the second transverse plate 16, the lower fork plate 34 is fixed on the third transverse plate 17, and racks are arranged on the pressing plate 32 and the upper fork plate 33 and used for the meshing lifting of the conveyor belt on the second upper stepping motor 39; still be equipped with vertical slide shaft 18 in the frame 1, be equipped with the cover on second diaphragm 16 and the third diaphragm 17 and locate slide opening on the vertical slide shaft 18, when second diaphragm 16 and third diaphragm 17 were elevating movement under last step motor's drive, the slide opening slided on vertical slide shaft 18, played fixed and standard movement track's effect.
Variations and modifications to the above-described embodiments may occur to those skilled in the art, in light of the above teachings and teachings. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (9)
1. The utility model provides an automatic sample shifts machine, includes the frame, locates the moving platform in the frame and move liquid operation subassembly, treater, moving platform locates the frame bottom, move liquid operation subassembly and locate the moving platform top, its characterized in that:
the liquid transfer operation assembly comprises a liquid transfer manipulator, an upper stepping motor for driving the liquid transfer manipulator to move up and down above a moving platform, an upper trigger for moving up and down under the driving of the upper stepping motor, and an upper reset detection sensor which is fixed on the rack and used for detecting the height position of the upper trigger so as to judge whether the liquid transfer manipulator resets to an initial position; the upper reset detection sensor is used for outputting a detection signal to the processor, and the processor is used for controlling the upper stepping motor according to the detection signal so as to reset the pipetting manipulator to the initial position.
2. The automatic sample transfer machine of claim 1, wherein said upper trigger is a light barrier, said upper reset detection sensor is a U-shaped photosensor, and said light barrier is disposed on said pipetting robot; when the pipetting manipulator moves to the initial position, the light blocking sheet blocks the light path of the U-shaped photoelectric sensor.
3. The automatic sample transfer machine according to claim 1, wherein the moving platform comprises a sample rack transport stage, a lower stepping motor for driving the sample rack transport stage to perform reciprocating translational motion under the pipetting module, a lower trigger for performing reciprocating translational motion under the driving of the lower stepping motor, and a lower reset detection sensor fixed at the bottom of the rack for detecting the position of the lower trigger to determine whether the sample rack transport stage is reset to an initial position; the lower reset detection sensor is used for outputting a detection signal to the processor, and the processor is also used for controlling the lower stepping motor according to the detection signal so as to reset the sample rack transport table to an initial position.
4. The automatic sample transfer machine according to claim 3, wherein the moving platform further comprises a horizontally arranged optical axis and a linear bearing, the optical axis is connected with the sample rack transport platform and is sleeved with the linear bearing, and the lower stepping motor drives the sample rack transport platform to perform reciprocating translation along the optical axis through a conveying belt.
5. The automatic sample transfer machine according to claim 1, wherein said frame is an L-shaped frame comprising two L-shaped side plates and at least one cross plate, said cross plate is transversely disposed between said side plates, said pipetting module is mounted on said cross plate, and said moving platform is disposed on a flat extension of the bottom of said L-shaped frame.
6. The automatic sample transfer machine according to claim 3, wherein a housing is detachably sleeved outside the rack, the housing partially encloses the pipetting module, and the side and top of the housing are detachably connected; the upper reset detection sensor is exposed out of the shell at a position facing the sample rack transport table.
7. The automatic sample transfer machine of claim 5, wherein the pipetting robot comprises a pressure plate, an upper fork plate, a lower fork plate and a ferrule, wherein the pressure plate is disposed above the upper fork plate, and a first slit is disposed between the pressure plate and the upper fork plate; the upper fork plate and the lower fork plate are vertically superposed, the clamping sleeve is arranged below the lower fork plate, a second crack is arranged between the lower fork plate and the upper end of the clamping sleeve, and the clamping sleeve is used for clamping the sample injection injector.
8. The automatic specimen transfer machine of claim 7, wherein the upper stepper motor comprises a first upper stepper motor and a second upper stepper motor, the first upper stepper motor is used for driving the whole pipetting manipulator to do lifting movement; and the second upper stepping motor is used for driving the pressing plate and the upper fork plate to do lifting motion.
9. The automatic sample transfer machine of claim 8, wherein the cross plates comprise, from top to bottom, a first cross plate, a second cross plate, and a third cross plate; the first upper stepping motor is arranged on the first transverse plate, and racks are arranged on the second transverse plate and the third transverse plate and are used for being meshed with a conveying belt on the first upper stepping motor to lift; the second upper stepping motor is arranged on the second transverse plate, the lower fork plate is fixed on the third transverse plate, and racks are arranged on the pressing plate and the upper fork plate and used for the meshing lifting of the conveyor belt on the second upper stepping motor; the rack is also provided with a vertical sliding shaft, and the second transverse plate and the third transverse plate are provided with sliding holes which are sleeved on the vertical sliding shaft.
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CN112612317A (en) * | 2020-12-31 | 2021-04-06 | 北京立禾物联科技有限公司 | Control system of intelligent storage cabinet and intelligent storage cabinet |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN112612317A (en) * | 2020-12-31 | 2021-04-06 | 北京立禾物联科技有限公司 | Control system of intelligent storage cabinet and intelligent storage cabinet |
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