Test strip selecting device and control method thereof

Abstract

The invention discloses a test strip selecting device and a control method thereof. The test strip selecting device comprises a box body, a storage tank, at least two rotating rollers, at least two detectors, a reversing shaft and a driving assembly, and the two detectors respectively face the two adjacent rotating rollers; the driving assembly is used for driving the reversing shaft and the rotating rollers to rotate; the test paper strips in the storage groove fall into the test paper grooves from the outlet and then fall into the reversing shaft under the rotation of the rotating rollers, and the test paper strips in the test paper grooves of the rotating rollers are not located in the reversing shaft at the same time; the reversing shaft is used for reversing the test strip according to the front surface or the back surface of the test strip detected by the detector. Due to the adoption of the at least two rotating rollers, the probability that the test paper strips in the storage groove fall into the test paper groove is increased, and the at least two rotating rollers share one reversing shaft, so that the reversing working frequency of the reversing shaft is increased, the screening time of the test paper strips is shortened, and the screening efficiency of the test paper strip selecting device is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a test strip selection device and a control method thereof. Background Art

[0002] The conventional detection method for dry chemical urine analysis is the urine test strip colorimetry. This method has evolved from manual test strip colorimetry to semi-automatic urine analyzers and then to fully automatic urine analyzers. It has gone through multiple stages of instrument upgrades and iterations. With the rapid development of technology, it has gradually become complete, and dry chemical urine analysis instruments have been widely used.

[0003] In the prior art, the detection speed of a single test strip selection device is generally 240-480 pieces / hour. In institutions such as physical examination centers or large tertiary hospitals, the sample size is large. The existing test strip selection device takes a long time to screen the test strips and cannot issue the test results as soon as possible. Therefore, there is a problem of low efficiency in test strip screening.

[0004] Therefore, the prior art still needs to be improved and developed. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a test strip selection device and a control method thereof in view of the above-mentioned defects of the prior art, aiming to solve the problem of low efficiency of test strip screening of the test strip selection device in the prior art.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows:

[0007] A test strip selection device, comprising:

[0008] Box;

[0009] A storage tank is arranged in the box body; at least two outlets are arranged at the bottom of the storage tank, and the outlets are used for the test strips in the storage tank to pass through;

[0010] At least two rotating rollers are respectively located at corresponding exits, each of the rotating rollers is provided with at least one test paper slot, the test paper slot is arranged along the central axis direction of the rotating roller, and each of the test paper slots accommodates a test paper strip;

[0011] At least two detectors are located between two adjacent rotating rollers, and the two detectors face the two adjacent rotating rollers respectively; the detectors are used to detect the presence and / or absence of a test strip in the corresponding test strip slot, or the detectors are used to detect at least one of the absence of a test strip in the corresponding test strip slot, the front side of the test strip, and the back side of the test strip;

[0012] A reversing shaft, located below the rotating roller;

[0013] A driving assembly, used for driving the reversing shaft and each of the rotating rollers to rotate respectively;

[0014] Wherein, after the test paper strip in the storage slot falls into the test paper slot from the outlet, it falls into the reversing shaft under the rotation of the rotating roller, and the test paper strips in the test paper slots of each rotating roller are not located in the reversing shaft at the same time;

[0015] The reversing shaft reverses the test strip according to the front side or the back side of the test strip detected by the detector.

[0016] The test strip selection device, wherein the driving assembly includes: an axis driving assembly and at least two roller driving assemblies, the axis driving assembly is used to drive the reversing shaft to rotate, and the roller driving assembly is used to drive the corresponding rotating roller to rotate.

[0017] The test strip selection device, wherein the roller drive assembly comprises:

[0018] A driving member, arranged on the box body;

[0019] A driving wheel connected to the output shaft of the driving member;

[0020] A first rotating shaft connected to a corresponding rotating roller;

[0021] A driven wheel connected to the first rotating shaft;

[0022] A synchronous belt is sleeved outside the driving wheel and the driven wheel.

[0023] The test strip selection device, wherein the driving members of the two roller drive assemblies are respectively located on two sides of the box body.

[0024] The test strip selection device, wherein the storage tank is provided with a stirring assembly, and the stirring assembly is located in the storage tank; the driven wheel is provided with a self-rotating member; the stirring assembly comprises:

[0025] A housing having an opening;

[0026] A second rotating shaft, rotatably connected to the housing;

[0027] A toggle block, wherein a first end of the toggle block is located in the opening and connected to the second rotating shaft, a second end of the toggle block extends from the opening into the storage slot, and the toggle block can be rotated into the opening;

[0028] an elastic member, wherein the elastic force provided by the elastic member causes the second end of the toggle block to rotate toward the opening;

[0029] A toggle shaft, located outside the storage slot;

[0030] Wherein, the first end of the shifting shaft is connected to the second rotating shaft, and the second end of the shifting shaft extends to the rotation track of the self-rotating member.

[0031] The test strip selection device, wherein the rotating roller is further provided with at least one sinking groove, the sinking groove is arranged along the central axis direction of the rotating roller, and at least one convex rib is arranged in the sinking groove, respectively located at both ends of the sinking groove; all the convex ribs are arranged in a straight line and the straight line is parallel to the central axis direction of the rotating roller, and the sinking groove cannot accommodate the test strip; and / or

[0032] When the rotating direction of the rotating roller is taken as the forward direction, the side wall of the test paper slot at the rear is provided with a chamfer.

[0033] The test strip selection device, wherein the reversing shaft is provided with a through hole, and the through hole can allow the test strip to pass through;

[0034] A first guide member and a second guide member are disposed outside the reversing shaft, a first end of the first guide member and a first end of the second guide member are spaced apart to form a drop-in opening, and the drop-in opening faces the storage slot;

[0035] The second end of the first guide member and the second end of the second guide member are spaced apart to form a drop-out port, and an obtuse angle is formed between the drop-out port and the drop-in port.

[0036] The test strip selection device, wherein a first identification portion is provided on the front side of the test strip, and a second identification portion is provided on the back side of the test strip, the first identification portion and the second identification portion have different light absorption properties, and the detector adopts a reflective optical coupler.

[0037] A control method for a test strip selection device as described in any one of the above, comprising the following steps:

[0038] Control at least two rotating rollers to rotate by a driving assembly so that the test paper slots of the rotating rollers are located at positions corresponding to the detectors;

[0039] According to the detection result of the detector, the driving assembly drives the rotating roller to rotate and drives the reversing shaft to rotate; wherein, the detection result includes: the presence of a test strip or the absence of a test strip, or the detection result includes: at least one of the front side, the back side or the absence of a test strip; when there are test strips in the test strip slots of at least two rotating rollers, the at least two rotating rollers rotate successively.

[0040] The control method of the test strip selection device, wherein the driving assembly drives the rotating roller to rotate and the reversing shaft to rotate according to the detection result of the detector, comprises:

[0041] When the detection result is positive, the driving assembly drives the rotating roller to rotate, so that the test strip in the test strip slot of the rotating roller falls into the reversing shaft, and then the driving assembly drives the reversing shaft to rotate; wherein the rotation direction of the reversing shaft is opposite to the rotation direction of the rotating roller;

[0042] When the detection result is a negative side, the driving assembly drives the rotating roller to rotate, so that the test strip in the test strip slot of the rotating roller falls into the reversing shaft, and then the driving assembly drives the reversing shaft to rotate; wherein the rotation direction of the reversing shaft is the same as the rotation direction of the rotating roller;

[0043] When the detection result is that the test strip does not exist, the driving assembly drives the rotating roller to rotate so that the test strip slot of the rotating roller is located at a position corresponding to the detector.

[0044] Beneficial effect: Since two rotating rollers are used, the probability of the test strip in the storage slot falling into the test strip slot is increased, and the two rotating rollers share a reversing shaft, which increases the reversing working frequency of the reversing shaft, shortens the screening time of the test strip, and improves the screening efficiency of the test strip selection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 1 is a schematic diagram of the structure of the test strip selection device in the open state according to an embodiment of the present invention.

[0046] Figure 2 1 is a schematic diagram of the structure of the test strip selection device in the closed state according to the embodiment of the present invention.

[0047] Figure 3 It is a cross-sectional view of a test strip selection device in an embodiment of the present invention.

[0048] Figure 4 Schematic diagram of the structure of the rotating roller and the stirring assembly in the embodiment of the present invention.

[0049] Figure 5 It is a schematic structural diagram of the rotating roller, the stirring assembly and the driven wheel in the embodiment of the present invention.

[0050] Figure 6 It is a schematic diagram of the structure of the rotating roller and the reversing shaft in an embodiment of the present invention.

[0051] Description of reference numerals:

[0052] 10. Box body; 11. Storage slot; 12. Exit; 13. Extension part; 20. Rotating roller; 21. Test paper slot; 211. Chamfer; 22. Sink; 23. Convex rib; 24. Annular groove; 30. Detector; 40. Reversing shaft; 41. Through hole; 42. First guide member; 43. Second guide member; 44. Drop inlet; 45. Drop outlet; 511. Driving wheel; 512. First rotating shaft; 513. Driven wheel; 514. Synchronous belt; 515. Self-rotating member; 61. Second rotating shaft; 62. Toggle block; 63. Toggle shaft. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solution and advantages of the present invention clearer and more specific, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0054] Please also see Figure 1-Figure 6 , the present invention provides some embodiments of a test strip selection device.

[0055] The test strip is a test strip in the prior art, which is usually in a long flat strip shape, and is provided with a marking portion for marking the front or back of the test strip. Specifically, the front of the test strip is provided with a first marking portion, and the back of the test strip is provided with a second marking portion, and the first marking portion and the second marking portion have different light absorption properties. By detecting the marking portion, the front or back of the test strip can be determined.

[0056] like Figure 1-Figure 3 As shown, the test strip selection device of the present invention comprises:

[0057] Box 10;

[0058] A storage tank 11 is disposed in the box body 10; at least two outlets 12 are disposed at the bottom of the storage tank 11, and the outlets 12 are used for the test strips in the storage tank 11 to pass through;

[0059] At least two rotating rollers 20 (the two rotating rollers 20 are denoted as a first rotating roller and a second rotating roller), respectively located at corresponding positions of the outlet 12, each of the rotating rollers 20 is provided with at least one test paper slot 21, the test paper slot 21 is arranged along the central axis direction of the rotating roller 20, and each of the test paper slots 21 accommodates a test paper strip;

[0060] At least two detectors 30 are located between two adjacent rotating rollers 20, and the two detectors 30 face the two adjacent rotating rollers 20 respectively; the detectors are used to detect the presence and / or absence of a test strip in the corresponding test strip slot 21, or the detectors are used to detect at least one of the absence of a test strip in the corresponding test strip slot 21, the front side of the test strip, and the back side of the test strip;

[0061] A reversing shaft 40, located below the rotating roller 20;

[0062] A driving assembly, used for driving the reversing shaft 40 and each of the rotating rollers 20 to rotate respectively;

[0063] Wherein, after the test strip in the storage slot 11 falls into the test strip slot 21 from the outlet 12, it falls into the reversing shaft 40 under the rotation of the rotating roller 20, and the test strips in the test strip slots 21 of each rotating roller 20 are not located in the reversing shaft 40 at the same time;

[0064] The reversing shaft 40 reverses the test strip according to the front side or the back side of the test strip detected by the detector 30 .

[0065] Specifically, the storage slot 11 is used to store the test strips. The storage slot 11 is located at the top of the box 10. The storage slot 11 is in the shape of an inverted trapezoidal table. The length of the storage slot 11 is slightly greater than the length of the test strips, and the test strips can be placed therein. The outlet 12 is located at the bottom of the storage slot 11. The test strips in the storage slot 11 can fall from the outlet 12 into the test strip slot 21 of the rotating roller 20. The rotating roller 20 is cylindrical and located at a corresponding position of the outlet 12 in the box 10. The length direction of the rotating roller 20 is parallel to the length direction of the storage slot 11. The test strip slot 21 is extended along the central axis direction of the rotating roller 20. Since the test strips have a certain thickness, the test strip slot 21 has a certain depth, which is slightly greater than the thickness. Each test strip slot 21 can accommodate one test strip. Of course, a plurality of test strip slots 21 can be provided on the rotating roller 20, and the plurality of test strip slots 21 can be provided around the central axis of the rotating roller 20. The detector 30 is used to detect the orientation of the test strip in the test strip slot 21. The test strip can be facing the detector 30 with its front side or its back side. The test strip selection device usually selects the test strip and makes the front side of the test strip face upward. After the detector 30 detects the front side or the back side of the test strip, it determines whether it is necessary to reverse the test strip through the reversing shaft 40 so that the front side of the test strip faces upward. After the rotating roller 20 rotates the test strip slot 21 to the corresponding position of the detector 30 for detection, if there is a test strip in the test strip slot 21, the rotating roller 20 is driven to rotate and the test strip falls into the reversing shaft 40. The reversing shaft 40 is provided with a placement hole for placing the test strip. After the test strip falls into the placement hole of the reversing shaft 40, the test strip cannot be flipped. The reversing shaft 40 is used to reverse the test strip so that the test strip selection device outputs a test strip with its front side facing upward.

[0066] When the test strip in the storage slot 11 falls into the test strip slot 21 of the rotating roller 20, the rotating roller 20 rotates toward the side where the reversing shaft 40 is located. Therefore, the rotation direction of the test strip in the test strip slot 21 of the rotating roller 20 is toward the reversing shaft 40. Specifically, the storage slot 11 can be divided into two parts, namely the first storage slot and the second storage slot, and the rotating roller 20 includes: a first rotating roller and a second rotating roller, the first rotating roller corresponds to the outlet 12 of the first storage slot, and the second rotating roller corresponds to the outlet 12 of the second storage slot. The detector 30 is located between the first rotating roller and the second rotating roller. After the test strip in the storage slot 11 falls into the test strip slot 21 of the rotating roller 20, the rotating roller 20 turns the test strip in the test strip slot 21 to the detector 30 for detection. The number of detectors 30 can be greater than or equal to the number of rotating rollers 20, and each rotating roller 20 corresponds to at least one detector 30. The number of the rotating rollers 20 can be set to at least two, and each outlet 12 corresponds to at least one rotating roller 20 . Of course, the number of the outlets 12 can also be adjusted according to the number of the rotating rollers 20 corresponding to the storage slots 11 .

[0067] At least two rotating rollers 20 share a reversing shaft 40. The test strips in the test strip slots 21 on each rotating roller 20 can all be transferred to the same reversing shaft 40. The test strips in the test strip slots 21 of each rotating roller 20 will not be located in the reversing shaft 40 at the same time, and only one test strip will be placed in the reversing shaft 40. If there are test strips in the test strip slots 21 of at least two rotating rollers 20, each test strip will fall into the reversing shaft 40 one after another. If there is a test strip in the test strip slot 21 of only one rotating roller 20, at least two rotating rollers 20 can rotate together. After the rotating roller 20 with the test strip rotates, the test strip will fall into the reversing shaft 40, and the rotating roller 20 without the test strip will rotate in the next cycle, so that the test strip in the storage slot 11 falls into the test strip slot 21 of the rotating roller 20. If there are no test strips in the test strip slots 21 of all rotating rollers 20, all rotating rollers 20 can enter the next cycle of rotation together.

[0068] Since two rotating rollers 20 are used, the probability of the test strip in the storage slot 11 falling into the test strip slot 21 is increased, and the two rotating rollers 20 share a reversing shaft 40, which increases the reversing working frequency of the reversing shaft 40, shortens the screening time of the test strips, and improves the screening efficiency of the test strip selection device.

[0069] In addition, the driving component adopts an independent driving mode to drive the reversing shaft 40 and at least two rotating rollers 20 respectively, and the reversing shaft 40 and at least two rotating rollers 20 are independently controlled. A plurality of test paper slots 21 can be set on the rotating roller 20, and the test strips of the next cycle can be screened by rotating the rotating roller 20 at a smaller angle, further shortening the screening time of the test strips. The two detectors 30 are respectively facing the central axis of the two rotating rollers 20. As the rotating roller 20 rotates, the test paper slot 21 can be rotated to the position corresponding to the detector 30, so that the detector 30 can detect the test strips in the test paper slot 21.

[0070] In a preferred implementation of the embodiment of the present invention, the driving assembly includes: an axis driving assembly and at least two roller driving assemblies, the axis driving assembly is used to drive the reversing shaft 40 to rotate, and the roller driving assembly is used to drive the corresponding rotating roller 20 to rotate.

[0071] Specifically, since the reversing shaft 40 and the two rotating rollers 20 are driven and controlled independently, the driving assembly includes a shaft driving assembly and two roller driving assemblies. The shaft driving assembly drives the reversing shaft 40 , and the roller driving assembly drives the corresponding rotating rollers 20 .

[0072] In a preferred implementation of the embodiment of the present invention, Figure 1-Figure 2 As shown, the roller drive assembly includes:

[0073] A driving member, arranged in the box body 10;

[0074] A driving wheel 511 connected to the output shaft of the driving member;

[0075] A first rotating shaft 512 connected to the corresponding rotating roller 20;

[0076] A driven wheel 513 connected to the first rotating shaft 512;

[0077] The synchronous belt 514 is sleeved outside the driving wheel 511 and the driven wheel 513 .

[0078] Specifically, the roller drive assembly adopts a synchronous belt 514 transmission structure. When the output shaft of the driving member rotates, the driving wheel 511 is driven to rotate. Under the action of the synchronous belt 514, the driven wheel 513 also rotates with the rotation of the driving wheel 511.

[0079] In a preferred implementation of the embodiment of the present invention, Figure 1 As shown, the driving components of the two roller driving assemblies are respectively located on both sides of the box body 10.

[0080] Specifically, each rotating roller 20 corresponds to a roller driving assembly, and the two roller driving assemblies are respectively located on both sides of the box body 10 .

[0081] In a preferred implementation of the embodiment of the present invention, Figure 3-Figure 5 As shown, the storage tank 11 is provided with a stirring component, and the stirring component is located in the storage tank 11.

[0082] Specifically, the stirring component is used to stir the test strips in the storage tank 11 . The stirring component stirs the test strips in the storage tank 11 so that the test strips are more evenly distributed in the storage tank 11 .

[0083] In a preferred implementation of the embodiment of the present invention, Figure 3-Figure 5 As shown, the driven wheel 513 is provided with a self-rotating member 515; the stirring assembly includes:

[0084] A housing having an opening;

[0085] A second rotating shaft 61, rotatably connected to the housing;

[0086] A toggle block 62, wherein a first end of the toggle block 62 is located in the opening and connected to the second rotating shaft 61, and a second end of the toggle block 62 extends from the opening into the storage slot 11, and the toggle block 62 can be rotated into the opening;

[0087] A shifting shaft 63 is located outside the storage slot 11;

[0088] The first end of the shifting shaft 63 is connected to the second rotating shaft 61 , and the second end of the shifting shaft 63 extends to the rotating track of the self-rotating member 515 .

[0089] Specifically, the housing is located in the middle of the storage slot 11, an opening is provided on the housing, and the toggle block 62 is located in the opening and rotates with the rotation of the second rotating shaft 61. The first end of the toggle block 62 is connected to the second rotating shaft 61, and the second end of the toggle block 62 can be rotated to the outside of the opening, thereby toggling the test strip in the storage slot 11. The stirring assembly of the present application adopts a linkage structure. When the driven wheel 513 drives the first rotating shaft 512 and the rotating roller 20 to rotate, since the driven wheel 513 is provided with a self-rotating member 515, during the rotation of the driven wheel 513, the self-rotating member 515 rotates accordingly. When the self-rotating member 515 rotates to the position of the toggle shaft 63 (the initial position of the toggle shaft 63), the self-rotating member 515 will toggle the toggle shaft 63 to rotate, and the second end of the toggle block 62 will rotate to the outside of the opening, so as to toggle the test strip at the opening; when the driven wheel 513 rotates in the opposite direction, the toggle shaft 63 and the self-rotating member 515 will separate, and under the action of the gravity of the toggle block 62, the toggle shaft 63 rotates back to the initial position, and the second end of the toggle block 62 rotates to the inside of the opening. The self-rotating member 515 includes a fixed part and a rotating part, the fixed part is connected to the driven wheel 513, and the rotating part can rotate. When the self-rotating member 515 is used, it is beneficial to reduce the friction between the toggle shaft 63 and the self-rotating member 515. For example, the self-rotating member 515 can use a bearing, the inner ring of the bearing is used as the fixed part, and the outer ring of the bearing is used as the rotating part. The stirring assembly is located in the storage tank 11, and the storage tank 11 is divided into two parts, namely the first storage tank and the second storage tank. There can be at least two openings, which are respectively located on both sides of the shell and face the first storage tank and the second storage tank respectively. There are two second rotating shafts 61, two toggle shafts 63, and at least two toggle blocks 62. Since there are at least two driven wheels 513, there are also at least two self-rotating members 515. The self-rotating member 515 on each driven wheel 513 drives the corresponding toggle shaft 63, the second rotating shaft 61, and the toggle block 62 to rotate, and toggle the corresponding test strip.

[0090] In order to make the toggle block 62 more quickly and completely located in the opening, the stirring assembly further includes: an elastic member, the elastic force provided by the elastic member causes the second end of the toggle block to rotate toward the opening. As the driven wheel 513 rotates, the self-rotating member 515 will toggle the toggle shaft 63 to rotate and cause the elastic member to deform; as the driven wheel 513 rotates in the opposite direction, the toggle shaft 63 and the self-rotating member 515 will separate, and the gravity of the toggle block 62 and the elastic force of the elastic member are superimposed, causing the second end of the toggle block 62 to rotate quickly into the opening. The elastic member can be a torsion spring, and the two ends of the torsion spring are respectively connected to the groove wall and the second rotating shaft 61. The elastic member can also be a spring, which is respectively connected to the groove wall and the second end of the toggle block 62.

[0091] In a preferred implementation of the embodiment of the present invention, Figure 3-Figure 6 As shown, at least one groove 22 is further provided on the rotating roller 20, and the groove 22 is arranged along the central axis direction of the rotating roller 20. At least one rib 23 is provided in the groove 22, and the length direction of the rib 23 is parallel to the central axis direction of the rotating roller 20. All the ribs 23 are arranged in a straight line and the straight line is parallel to the central axis direction of the rotating roller 20.

[0092] Specifically, there may be a plurality of convex ribs 23, all of which are arranged in a straight line, and the plurality of convex ribs 23 are respectively located at both ends of the sink 22. Since the plurality of test strips in the storage slot 11 are not all parallel to the test strip slot 21, when the test strip is parallel to the test strip slot 21, the test strip is more likely to fall into the test strip slot 21. The sink 22 is provided on the rotating roller 20, and the convex ribs 23 are provided in the sink 22. When the sink 22 rotates to the exit 12 position, if the test strip is not parallel to the test strip slot 21, a portion of the test strip will fall into the sink 22, and as the sink 22 moves, the test strip will abut against the convex ribs 23 (or the side wall of the sink 22). When one side of the test strip abuts against the convex ribs 23 (or the side wall of the sink 22) successively, the straight line in which the plurality of convex ribs 23 are arranged (or the length direction of the convex ribs 23, or the side wall of the sink 22) is parallel to the central axis direction of the rotating roller 20. An annular groove 24 is provided on the rotating roller 20 (there may be multiple annular grooves 24), and an extension portion 13 is provided on the storage slot 11 (the extension portion 13 is located on the side of the storage slot 11 away from the other storage slot 11, and there may be multiple extension portions 13). The extension portion 13 is inserted into the annular groove 24. When the rotating roller 20 rotates, the extension portion 13 is used to push the test strip that falls into the sink 22 into the storage slot 11. When the test paper slot 21 on the rotating roller 20 rotates to face the other rotating roller 20, the test paper strip in the test paper slot 21 falls into the reversing shaft 40, and the sink 22 rotates to the outlet 12 position. At this time, at least part or all of the test paper strip can fall into the sink 22, and then the rotating roller 20 will rotate in the opposite direction. Since the storage slot 11 is provided with an extension portion 13, the test paper strip falling into the sink 22 will be blocked by the extension portion 13 and cannot rotate with the sink 22. The test paper strip falling into the sink 22 will be transferred to the surface of the extension portion 13 and remain in the storage slot 11, and the side of the test paper strip is also parallel to the central axis direction of the rotating roller 20. After some of the test strips that have fallen into the trough 22 are adjusted to be parallel to the central axis direction of the rotating roller 20, they move toward the stirring assembly, and then the rotating roller 20 will rotate in the opposite direction. Some of the test strips that have fallen into the trough 22 are not easy to move with the trough 22. With the cooperation of the stirring assembly, the adjusted test strips are turned over. With the cooperation of the two, most of the test strips are close to the parallel test strip slot 21, which increases the probability of the test strips falling into the test strip slot 21 and shortens the screening time of the test strips.

[0093] In a preferred implementation of the embodiment of the present invention, Figure 3 As shown, when the rotation direction of the test paper slot 21 on the rotating roller 20 toward the reversing shaft 40 is taken as the forward direction, the side wall of the test paper slot 21 located at the rear is provided with a chamfer 211 .

[0094] Specifically, when the rotating roller 20 rotates in the forward direction, the rear side wall of the test paper slot 21 is provided with a chamfer 211. When the test paper strip does not completely fall into the test paper slot 21, the test paper strip will be blocked by the side wall of the storage slot 11 and pushed out of the test paper slot 21. The chamfer 211 facilitates the test paper strip to slide out of the test paper slot 21.

[0095] In a preferred implementation of the embodiment of the present invention, Figure 3 As shown, the reversing shaft 40 is provided with a through hole 41, and the through hole 41 can allow the test strip to pass through;

[0096] The reversing shaft 40 is provided with a first guide member 42 and a second guide member 43 outside. The first end of the first guide member 42 and the first end of the second guide member 43 are spaced apart to form a drop-in opening 44, and the drop-in opening 44 faces the storage slot 11.

[0097] The second end of the first guide member 42 and the second end of the second guide member 43 are spaced apart to form a drop-out port 45 , and an obtuse angle is formed between the drop-out port 45 and the drop-in port 44 .

[0098] Specifically, the placement hole on the reversing shaft 40 is a through hole 41. Since both ends of the through hole 41 are orifices, when the test strip slides out from different orifices, the side of the test strip faces different directions, so that the direction of the side of the test strip can be adjusted as needed, that is, the front side or the back side of the test strip can be adjusted to face up. The first end of the first guide 42 is inserted into the annular groove 24 of the corresponding rotating roller 20, and the first end of the second guide 43 is inserted into the annular groove 24 of the corresponding rotating roller 20. The test strip slot 21 rotates to the first end of the first guide 42 or the first end of the second guide 43, and the test strip in the test strip slot 21 enters the drop-in opening 44 under the guidance of the first end of the first guide 42 or the first end of the second guide 43. There can be multiple first guides 42 and multiple second guides 43.

[0099] The first guide 42 and the second guide 43 are used to guide the test strip. On the one hand, the test strip in the test strip slot 21 is guided to the reversing shaft 40, and on the other hand, the test strip in the reversing shaft 40 is led out. The first guide 42 and the second guide 43 are respectively located on both sides of the reversing shaft 40. The first guide 42 and the second guide 43 are spaced apart at one end (i.e., the first end) of the storage slot 11 to form a drop-in port 44, and the test strip in the test strip slot 21 can fall into the placement hole of the reversing shaft 40 from the drop-in port 44. The first guide 42 and the second guide 43 are spaced apart at one end (i.e., the second end) away from the storage slot 11 to form a drop-out port 45, and the test strip in the placement hole can slide out from the drop-out port 45. The first end of the first guide 42 and the first end of the second guide 43 are both provided with arc chamfers, which are conducive to the test strip in the test strip slot 21 sliding into the drop-in port 44.

[0100] An obtuse angle is formed between the drop-in port 44 and the drop-out port 45. The drop-in port 44 is vertically arranged, and the drop-out port 45 is biased toward the side where one of the two storage slots 11 is located. The placement hole is usually vertically arranged so that the test strip dropped into the drop-in port 44 can enter the placement hole. If the test strip in the placement hole needs to be reversed, the reversing shaft 40 rotates an obtuse angle (i.e., the obtuse angle formed between the drop-out port 45 and the drop-in port 44). If the test strip in the placement hole does not need to be reversed, the reversing shaft 40 rotates the supplementary angle of the obtuse angle.

[0101] In a preferred implementation of an embodiment of the present invention, a first identification portion is provided on the front side of the test strip, and a second identification portion is provided on the back side of the test strip, the first identification portion and the second identification portion have different light absorption properties, and the detector 30 includes a photodetector, a camera, etc., and the photodetector adopts a reflective optical coupler or a color scanner.

[0102] Specifically, the detector 30 of the present application adopts a reflective optical coupler. Since the first identification part and the second identification part have different light absorption properties, when the light beam is irradiated onto the first identification part and the second identification part, the light beam intensities reflected by the first identification part and the second identification part are different and detected by the reflective optical coupler, so the front and back sides of the test strip can be distinguished. Of course, it can also be detected that there is no test strip in the test strip slot 21. When there is no test strip in the test strip slot 21, the reflected light beam intensities are also different.

[0103] Based on the test strip selection device described in any of the above embodiments, the present invention also provides a preferred embodiment of a control method for the test strip selection device:

[0104] The control method of the test strip selection device according to the embodiment of the present invention comprises the following steps:

[0105] Step S100: controlling at least two rotating rollers to rotate by a driving assembly so that the test paper slots of the rotating rollers rotate to positions corresponding to the detectors.

[0106] Step S200, according to the detection result of the detector, driving the rotating roller to rotate and driving the reversing shaft to rotate through the driving component; wherein, the detection result includes: the presence of a test strip and / or the absence of a test strip, or the detection result includes: at least one of the front side, the back side or the absence of a test strip; when there are test strips in the test strip slots of at least two rotating rollers, the at least two rotating rollers rotate successively.

[0107] Specifically, the driving component controls the rotation of the two rotating rollers so that the test paper slots on the two rotating rollers rotate to the positions of the corresponding detectors, and the test paper strips in the test paper slots are detected by the detectors. There may or may not be a test paper strip in the test paper slot. When a test paper strip exists, the front side of the test paper strip may face the detector, or the back side of the test paper strip may face the detector.

[0108] According to the detection result of the detector, the rotating roller is driven to rotate so as to move the test paper slot downward, so that the test paper strip in the test paper slot falls into the reversing shaft, and then the reversing shaft is driven to rotate to output the test paper strip.

[0109] If there are test strips in both rotating rollers, no matter whether the test strips are on the front or back, the two rotating rollers rotate successively, first rotating one rotating roller so that the test strip in the test strip slot on the rotating roller falls into the reversing shaft, and then the reversing shaft is rotated to output the test strip; then the other rotating roller is rotated so that the test strip in the test strip slot on the rotating roller falls into the reversing shaft, and then the reversing shaft is rotated to output the test strip. The test strips in the two test strip slots are not located in the reversing shaft at the same time.

[0110] Step S200 specifically includes:

[0111] Step S210, when the detection result is positive, the driving assembly drives the rotating roller to rotate, so that the test strip in the test strip slot of the rotating roller falls into the reversing shaft, and then the driving assembly drives the reversing shaft to rotate; wherein the rotation direction of the reversing shaft is opposite to the rotation direction of the rotating roller.

[0112] Step S220, when the detection result is the reverse side, the driving assembly drives the rotating roller to rotate, so that the test strip in the test strip slot of the rotating roller falls into the reversing shaft, and then the driving assembly drives the reversing shaft to rotate; wherein the rotation direction of the reversing shaft is the same as the rotation direction of the rotating roller.

[0113] Step S230: When the detection result is that the test strip does not exist, the driving assembly drives the rotating roller to rotate so that the test strip slot of the rotating roller is located at a position corresponding to the detector.

[0114] Specifically, if the test result of the test strip in the test strip slot of a rotating roller is the front side, the reversing shaft does not need to be reversed, and the rotation direction of the reversing shaft is opposite to the rotation direction of the rotating roller, and the direction of the test strip is not changed. If the test result of the test strip in the test strip slot of a rotating roller is the back side, the reversing shaft needs to be reversed, and the rotation direction of the reversing shaft is the same as the rotation direction of the rotating roller to change the direction of the test strip.

[0115] For example, Figure 3 As shown, the rotating roller 20 on the left rotates clockwise to transfer the test strip in the test strip slot 21 to the reversing shaft 40. If the test strip is located in the test strip slot 21 with its front side facing the detector 30, then the test strip falls into the reversing shaft 40 with its front side facing right and its back side facing left. In this case, the reversing shaft 40 needs to be controlled to rotate counterclockwise, and the output test strip faces front upward. If the test strip is located in the test strip slot 21 with its back side facing the detector 30, then the test strip falls into the reversing shaft 40 with its back side facing right and its front side facing left. In this case, the reversing shaft 40 needs to be controlled to rotate clockwise, and the output test strip faces front upward. The rotating roller 20 on the right side rotates counterclockwise to transfer the test strip in the test strip slot 21 to the reversing shaft 40. If the test strip is located in the test strip slot 21 with its front side facing the detector 30, then the test strip falls into the reversing shaft 40 with its front side facing left and its back side facing right. In this case, the reversing shaft 40 needs to be controlled to rotate clockwise, and the output test strip faces up. If the test strip is located in the test strip slot 21 with its back side facing the detector 30, then the test strip falls into the reversing shaft 40 with its front side facing right and its back side facing left. In this case, the reversing shaft 40 needs to be controlled to rotate counterclockwise, and the output test strip faces up.

[0116] If the test result is that there is no test strip, the rotating roller is controlled to rotate. If there is no test strip in one test strip slot, the two active rollers can rotate at the same time, and the reversing shaft is controlled to rotate once. If there is no test strip in both test strip slots, the two active rollers can rotate at the same time, and the reversing shaft does not rotate.

[0117] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A test strip selection device, characterized in that: include: Box; A storage tank is arranged in the box body; at least two outlets are arranged at the bottom of the storage tank, and the outlets are used for the test strips in the storage tank to pass through; At least two rotating rollers are respectively located at corresponding exits, each of the rotating rollers is provided with at least one test paper slot, the test paper slot is arranged along the central axis direction of the rotating roller, and each of the test paper slots accommodates a test paper strip; At least two detectors are located between two adjacent rotating rollers, and the two detectors face the two adjacent rotating rollers respectively; The detector is used to detect the presence and / or absence of a test strip in the corresponding test strip slot, or the detector is used to detect at least one of the absence of a test strip in the corresponding test strip slot, the front side of the test strip, and the back side of the test strip; A reversing shaft, located below the rotating roller; A driving assembly, used for driving the reversing shaft and each of the rotating rollers to rotate respectively; Wherein, after the test paper strip in the storage slot falls into the test paper slot from the outlet, it falls into the reversing shaft under the rotation of the rotating roller, and the test paper strips in the test paper slots of each rotating roller are not located in the reversing shaft at the same time; The reversing shaft reverses the test strip according to the front side or the back side of the test strip detected by the detector.

2. The test strip selection device according to claim 1, characterized in that: The driving assembly comprises: an axle driving assembly and at least two roller driving assemblies, the axle driving assembly is used to drive the reversing shaft to rotate, and the roller driving assembly is used to drive the corresponding rotating rollers to rotate.

3. The test strip selection device according to claim 2, characterized in that: The roller drive assembly comprises: A driving member, arranged on the box body; A driving wheel connected to the output shaft of the driving member; A first rotating shaft connected to a corresponding rotating roller; A driven wheel connected to the first rotating shaft; A synchronous belt is sleeved outside the driving wheel and the driven wheel.

4. The test strip selection device according to claim 3, characterized in that: The driving components of the two roller driving assemblies are respectively located on two sides of the box body.

5. The test strip selection device according to claim 3, characterized in that: The storage tank is provided with a stirring assembly, and the stirring assembly is located in the storage tank; the driven wheel is provided with a self-rotating member; the stirring assembly includes: A housing having an opening; A second rotating shaft, rotatably connected to the housing; A toggle block, wherein a first end of the toggle block is located in the opening and connected to the second rotating shaft, a second end of the toggle block extends from the opening into the storage slot, and the toggle block can be rotated into the opening; an elastic member, wherein the elastic force provided by the elastic member causes the second end of the toggle block to rotate toward the opening; A toggle shaft, located outside the storage slot; Wherein, the first end of the shifting shaft is connected to the second rotating shaft, and the second end of the shifting shaft extends to the rotation track of the self-rotating member.

6. The test strip selection device according to claim 1, characterized in that: The rotating roller is also provided with at least one sunken groove, the sunken groove is arranged along the central axis direction of the rotating roller, at least one convex rib is arranged in the sunken groove, and the length direction of the convex rib is parallel to the central axis direction of the rotating roller; all the convex ribs are arranged in a straight line and the straight line is parallel to the central axis direction of the rotating roller; and / or When the rotating direction of the rotating roller is taken as the forward direction, the side wall of the test paper slot at the rear is provided with a chamfer.

7. The test strip selection device according to any one of claims 1 to 6, characterized in that: The reversing shaft is provided with a through hole, and the through hole can allow the test strip to pass through; A first guide member and a second guide member are disposed outside the reversing shaft, a first end of the first guide member and a first end of the second guide member are spaced apart to form a drop-in opening, and the drop-in opening faces the storage slot; The second end of the first guide member and the second end of the second guide member are spaced apart to form a drop-out port, and an obtuse angle is formed between the drop-out port and the drop-in port.

8. The test strip selection device according to claim 7, characterized in that: A first identification portion is disposed on the front side of the test strip, and a second identification portion is disposed on the back side of the test strip. The first identification portion and the second identification portion have different light absorption properties, and the detector adopts a reflective optical coupler.

9. A control method for the test strip selection device according to any one of claims 1 to 8, characterized in that: The steps include: Control at least two rotating rollers to rotate by a driving assembly so that the test paper slots of the rotating rollers are located at positions corresponding to the detectors; According to the detection result of the detector, the driving assembly drives the rotating roller to rotate and drives the reversing shaft to rotate; wherein, the detection result includes: the presence of a test strip or the absence of a test strip, or the detection result includes: at least one of the front side, the back side or the absence of a test strip; when there are test strips in the test strip slots of at least two rotating rollers, the at least two rotating rollers rotate successively.

10. The control method of the test strip selection device according to claim 9, characterized in that: According to the detection result of the detector, the driving assembly drives the rotating roller to rotate and the driving reversing shaft to rotate, including: When the detection result is positive, the driving assembly drives the rotating roller to rotate, so that the test strip in the test strip slot of the rotating roller falls into the reversing shaft, and then the driving assembly drives the reversing shaft to rotate; wherein the rotation direction of the reversing shaft is opposite to the rotation direction of the rotating roller; When the detection result is a negative side, the driving assembly drives the rotating roller to rotate, so that the test strip in the test strip slot of the rotating roller falls into the reversing shaft, and then the driving assembly drives the reversing shaft to rotate; wherein the rotation direction of the reversing shaft is the same as the rotation direction of the rotating roller; When the detection result is that the test strip does not exist, the driving assembly drives the rotating roller to rotate so that the test strip slot of the rotating roller is located at a position corresponding to the detector.

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