A biochemical stirring anti-collision system and control method

Abstract

The present invention discloses a biochemical stirring anti-collision system and control method, the biochemical stirring anti-collision system comprises a stirring mounting plate, a rotating shaft, a driving component, a stirring component, a reaction disk, a reaction disk motion positioning component and a stirring positioning anti-collision component, the stirring mounting plate has a positioning hole, at least three stirring components are rotatably connected to the stirring mounting plate, and are evenly distributed in the circumferential direction of the rotating shaft, each positioning hole is located between two adjacent stirring components, the anti-collision bar is located in the positive projection direction of the positioning hole, and is matched with the stirring mounting plate through the positioning hole clearance, the travel switch is fixedly connected to the anti-collision bar, and is located on the side close to the positioning hole. When an instrument abnormality or human operation error occurs, the stirring mounting plate touches the travel switch of the anti-collision bar, triggering an early warning to stop the movement or the anti-collision bar is located in the positioning hole, and the rigidity of the anti-collision bar is used to make the stirring mounting plate unable to move, thereby protecting the stirring component from damage and reducing the instrument use cost.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a biochemical stirring anti-collision system and a control method. Background Art

[0002] The stirring device in the fully automatic biochemical analyzer is mainly used to quickly mix and stir the reagents and samples in the colorimetric cup, and is an indispensable supporting device in the fully automatic biochemical analyzer system. The existing technology usually uses mechanical stirring. In the case of an abnormality in the instrument, there is a risk that the stirring needle will hit other parts of the instrument, causing downtime and damage. Therefore, in the fully automatic biochemical analyzer, it is necessary to consider protecting the stirring needle from damage in the case of an abnormality in the instrument or human operating error, avoid losses, and reduce the cost of using the instrument. Summary of the invention

[0003] The purpose of the present invention is to provide a biochemical stirring anti-collision system and control method, aiming to solve the problem of protecting the stirring needle from damage and loss in the event of instrument abnormality or human operating error in a fully automatic biochemical analyzer, thereby reducing the cost of using the instrument.

[0004] To achieve the above-mentioned purpose, in a first aspect, the present invention provides a biochemical stirring anti-collision system, comprising a stirring mounting plate, a rotating shaft, a driving component, a stirring component, a reaction disk, a reaction disk motion positioning component and a stirring positioning anti-collision component, wherein the rotating shaft passes through the stirring mounting plate and is fixedly connected to the stirring mounting plate, and the center line of the rotating shaft coincides with the center line of the stirring mounting plate, the driving component is transmission-connected to the rotating shaft, and drives the stirring mounting plate to rotate and move up and down, the stirring mounting plate has a positioning hole, the number of the positioning holes and the stirring components are at least three, at least three stirring components are rotationally connected to the stirring mounting plate and are evenly distributed in the circumferential direction of the rotating shaft, each of the positioning holes is located between two adjacent stirring components, the reaction disk is located on a side of the stirring component away from the stirring mounting plate, a reaction cup is placed on the reaction disk, and the reaction disk motion positioning component is located on a side of the reaction disk away from the stirring mounting plate;

[0005] The stirring positioning anti-collision assembly includes an anti-collision rod and a travel switch. The anti-collision rod is located in the positive projection direction of the positioning hole and cooperates with the stirring mounting plate through the clearance of the positioning hole. The travel switch is fixedly connected to the anti-collision rod and is located on a side close to the positioning hole.

[0006] The travel switch has a first trigger part and a second trigger part, the first trigger part abuts against the inner wall of the positioning hole, and the second trigger part is arranged opposite to the first trigger part, and a side away from the first trigger part abuts against the inner wall of the positioning hole.

[0007] Wherein, the anti-collision rod has a step, the step is integrally formed with the anti-collision rod and is located in the circumferential direction of the anti-collision rod.

[0008] Among them, the stirring positioning anti-collision assembly also includes an anti-collision mounting sheet metal and a support plate. The anti-collision mounting sheet metal is fixedly connected to the anti-collision rod and is located on a side away from the stirring mounting plate. The support plate is detachably connected to the anti-collision mounting sheet metal and is located on a side away from the anti-collision rod.

[0009] Wherein, the anti-collision rod is a rigid metal rod.

[0010] Wherein, the stirring assembly includes at least two groups of stirring needles and stirring needle mounting plates.

[0011] Wherein, the matching tolerance between the positioning hole and the anti-collision rod is smaller than the distance between the stirring needle and the inner wall of the reaction cup when the stirring needle is located at the center of the reaction cup.

[0012] Among them, the reaction disk motion positioning assembly includes a reaction disk code disk, a first positioning optical coupler and a second positioning optical coupler. The reaction disk code disk is fixedly connected to the reaction disk and is located on the side of the stirring assembly away from the stirring mounting plate. The reaction disk code disk has code disk teeth, and the number of the code disk teeth is multiple. The multiple code disk teeth are evenly distributed in the circumferential direction of the reaction disk code disk. The first positioning optical coupler and the second positioning optical coupler are respectively arranged relative to different code disk teeth.

[0013] Among them, the reaction disk motion positioning assembly also includes an optocoupler mounting sheet metal and an adjusting screw. The optocoupler mounting sheet metal is fixedly connected to the first positioning optocoupler and the second positioning optocoupler, and is located on one side of the reaction disk code disk. The adjusting screw is threadedly connected to the optocoupler mounting sheet metal and is located on one side of the optocoupler mounting sheet metal.

[0014] In a second aspect, the present invention provides a biochemical stirring anti-collision control method, comprising:

[0015] Receiving the stop signal sent by the travel switch, the driving component is controlled to stop driving the stirring mounting plate to rotate and move up and down;

[0016] The first position signal and the second position signal of the corresponding code disk teeth detected by the first positioning optical coupler and the second positioning optical coupler are received, and it is determined whether the first position is at the first preset position and whether the second position is at the second preset position. If not, the reaction disk motor is controlled to stop driving the reaction disk to rotate, and the drive component stops driving the stirring mounting plate to rotate and move up and down.

[0017] A biochemical stirring anti-collision system and control method of the present invention is characterized in that the stirring mounting plate has a positioning hole, at least three stirring components are rotatably connected to the stirring mounting plate, and are evenly distributed in the circumferential direction of the rotating shaft, and each positioning hole is located between two adjacent stirring components; the anti-collision bar is located in the positive projection direction of the positioning hole, and is fitted with the stirring mounting plate through the positioning hole gap, and the travel switch is fixedly connected to the anti-collision bar and is located on the side close to the positioning hole. Once an abnormality or human operating error occurs, the stirring mounting plate will fall and touch the travel switch on the anti-collision bar, triggering an early warning to stop the instrument control system from moving, or the positioning hole of the stirring mounting plate has been lowered to the anti-collision bar, and the rigidity of the anti-collision bar can be used to prevent the stirring mounting plate from moving in a curve, thereby protecting the stirring component from damage and reducing the instrument maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of the biochemical stirring anti-collision system of the present invention;

[0020] Figure 2 It is a structural schematic diagram of the stirring installation plate and the stirring positioning anti-collision assembly of the present invention;

[0021] Figure 3 It is a structural schematic diagram of the stirring installation plate of the present invention;

[0022] Figure 4 It is a structural schematic diagram of the reaction disk motion positioning assembly of the present invention;

[0023] Figure 5 It is a schematic flow chart of the biochemical stirring anti-collision control method of the present invention;

[0024] In the figure: 100-biochemical stirring anti-collision system, 1-stirring mounting plate, 2-rotating shaft, 3-driving assembly, 4-stirring assembly, 5-reaction disk, 6-reaction disk motion positioning assembly, 7-stirring positioning anti-collision assembly, 11-positioning hole, 41-stirring needle, 42-stirring needle mounting plate, 61-reaction disk code disk, 62-first positioning optical coupler, 63-second positioning optical coupler, 64-optical coupler mounting sheet metal, 65-adjusting screw, 71-anti-collision rod, 72-travel switch, 73-anti-collision mounting sheet metal, 74-support plate, 611-code disk teeth, 711-step, 721-first trigger part, 722-second trigger part. DETAILED DESCRIPTION

[0025] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0026] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0027] See also Figures 1 to 4In a first aspect, the present invention provides a biochemical stirring anti-collision system 100, comprising a stirring mounting plate 1, a rotating shaft 2, a driving component 3, a stirring component 4, a reaction disk 5, a reaction disk motion positioning component 6 and a stirring positioning anti-collision component 7, wherein the rotating shaft 2 passes through the stirring mounting plate 1 and is fixedly connected to the stirring mounting plate 1, and the center line of the rotating shaft 2 coincides with the center line of the stirring mounting plate 1, the driving component 3 is transmission-connected to the rotating shaft 2, and drives the stirring mounting plate 1 to rotate and move up and down, the stirring mounting plate 1 has a positioning hole 11, the number of the positioning holes 11 and the stirring components 4 are at least three, at least three stirring components 4 are rotationally connected to the stirring mounting plate 1, and are evenly distributed in the circumferential direction of the rotating shaft 2, each of the positioning holes 11 is located between two adjacent stirring components 4, the reaction disk 5 is located on the side of the stirring component 4 away from the stirring mounting plate 1, the reaction cup is placed on the reaction disk 5, and the reaction disk motion positioning component 6 is located on the side of the reaction disk 5 away from the stirring mounting plate 1;

[0028] The stirring positioning anti-collision component 7 includes an anti-collision rod 71 and a travel switch 72. The anti-collision rod 71 is located in the positive projection direction of the positioning hole 11 and is clearance-matched with the stirring mounting plate 1 through the positioning hole 11. The travel switch 72 is fixedly connected to the anti-collision rod 71 and is located on a side close to the positioning hole 11.

[0029] In this embodiment, the rotating shaft 2 is a machine part that supports a rotating part and rotates with it to transmit motion, torque or bending moment. The stirring mounting plate 1 is used to support the stirring assembly 4 to stir the reagent. The driving assembly 3 includes a first motor, a first rotating wheel, a second rotating wheel, a conveyor belt, a second motor, a sliding member, a supporting member and an elastic member. The output end of the first motor is connected to the first rotating wheel in a transmission manner, the second rotating wheel is fixedly connected to the rotating shaft 2, the conveyor belt is connected to the first rotating wheel and the second rotating wheel in a rotational manner, the output end of the second motor is connected to the sliding member in a transmission manner, and drives the sliding member to move up and down, the supporting member is fixedly connected to the sliding member, and is fixedly connected to the rotating shaft 2, and is supported between the second rotating wheel and the elastic member. The first motor drives the first rotating wheel to rotate, drives the conveyor belt to rotate, thereby drives the second rotating wheel to rotate, and then drives the stirring mounting plate 1 fixedly connected to the rotating shaft 2 to rotate, the second motor drives the sliding member to slide up and down, thereby drives the supporting member to slide up and down, and then drives the stirring mounting plate 1 fixedly connected to the rotating shaft 2 to move up and down. The center line of the rotating shaft 2 coincides with the center line of the stirring mounting plate 1 to avoid eccentricity. A reaction cup is placed on the reaction disk 5 to carry reagents and samples for stirring. The reaction disk motion positioning component 6 is used to locate the rotation position of the reaction disk 5, thereby ensuring that the stirring component 4 is in the reaction cup of the reaction disk 5 to prevent collision. The stirring positioning anti-collision component 7 is used to locate the position of the stirring mounting plate 1 to prevent the stirring mounting plate 1 from tilting or falling and colliding to damage the instrument. The travel switch 72 is a type of position switch (also known as a limit switch) and is a commonly used low-current master electrical appliance. The collision of the moving parts of the production machinery is used to cause the contact to move to connect or disconnect the control circuit to achieve a certain control purpose. Usually, this type of switch is used to limit the position or stroke of the mechanical movement, so that the moving machinery automatically stops, reverses, changes speed, or automatically reciprocates at a certain position or stroke. The model can be WLCA2-2. The biochemical stirring anti-collision system 100 also includes a controller, which is electrically connected to the first motor, the second motor, the travel switch 72, the stirring assembly 4 and the reaction disk motion positioning assembly 6. The controller refers to a main command device that changes the wiring of the main circuit or the control circuit and changes the resistance value in the circuit in a predetermined order to control the start, speed regulation, braking and reverse of the motor. It is composed of a program counter, an instruction register, an instruction decoder, a timing generator and an operation controller. It is a "decision-making body" that issues commands. The model can be KY02S.

[0030] The specific process is as follows: the anti-collision bar 71 is located directly below the positioning hole 11, the reaction cup is placed at the preset position of the reaction disk 5, and the stirring installation plate 1 is located above the reaction cup, so that the stirring installation plate 1 and the stirring component 4 can perform downward linear motion. The first motor drives the stirring installation plate 1 to rotate, so that the stirring component 4 is located directly above the center of the reaction cup, the first motor stops moving, and the second motor drives the rotating shaft 2 to move downward, thereby driving the stirring installation plate 1 to move downward, and then driving the stirring component 4 to rotate in the reaction cup for stirring. When an abnormality occurs in the instrument or a human error occurs in operation, the stirring installation plate 1 and the stirring component 4 are forced to stop the curved motion and position displacement occurs, the coordination between the stirring installation plate 1 and the anti-collision bar 71 fails, and the stirring installation plate 1 will hit the travel switch 72 button at the top of the anti-collision bar 71 when it moves downward linearly, thereby triggering the travel switch 72 warning, and the instrument control system will stop it from moving to prevent the stirring component 4 from being hit and damaged. Alternatively, the positioning hole 11 of the stirring mounting plate 1 is directly opposite to the anti-collision rod 71, and the rigidity of the anti-collision rod 71 can be utilized to prevent the stirring mounting plate 1 from moving in a curve, thereby protecting the stirring component 4 from further collision and damage, thereby reducing the maintenance cost of the machine.

[0031] A biochemical stirring anti-collision system 100 of the present invention has a positioning hole 11 on the stirring installation plate 1, at least three stirring components 4 are rotatably connected to the stirring installation plate 1, and are evenly distributed in the circumferential direction of the rotating shaft 2, and each positioning hole 11 is located between two adjacent stirring components 4; the anti-collision rod 71 is located in the positive projection direction of the positioning hole 11, and is in clearance fit with the stirring installation plate 1 through the positioning hole 11, and the travel switch 72 is fixedly connected to the anti-collision rod 71 and is located on a side close to the positioning hole 11. Once an abnormality or human operation error occurs, the stirring installation plate 1 will fall and touch the travel switch 72 on the anti-collision rod 71, triggering an early warning to stop the instrument control system from moving, or the positioning hole 11 of the stirring installation plate 1 has been lowered to the anti-collision rod 71, and the rigidity of the anti-collision rod 71 can be used to prevent the stirring installation plate 1 from moving in a curve, thereby protecting the stirring component 4 from damage and reducing the instrument maintenance cost.

[0032] Furthermore, the travel switch 72 has a first trigger part 721 and a second trigger part 722, the first trigger part 721 abuts against the inner wall of the positioning hole 11, and the second trigger part 722 is arranged opposite to the first trigger part 721, and the side away from the first trigger part 721 abuts against the inner wall of the positioning hole 11.

[0033] In this embodiment, the first trigger part 721 and the second trigger part 722 are arranged opposite to each other, and the opposite directions are against the inner wall of the positioning hole 11, so that the instrument falls in the event of an abnormality or human operating error. When the anti-collision rod 71 is located in the positioning hole 11, the stirring mounting plate 1 will touch the travel switch 72 regardless of whether it rotates clockwise or counterclockwise, triggering an early warning, stopping the instrument and preventing the stirring component 4 from being damaged by collision.

[0034] Furthermore, the anti-collision rod 71 has a step 711 , and the step 711 is integrally formed with the anti-collision rod 71 and is located in the circumferential direction of the anti-collision rod 71 .

[0035] In this embodiment, the step 711 and the anti-collision rod 71 are integrally formed to have a stable structure, and the stirring mounting plate 1 and the stirring component 4 move downward beyond the stroke to damage the stirring component 4, thereby achieving mechanical protection.

[0036] Furthermore, the stirring positioning anti-collision assembly 7 also includes an anti-collision mounting sheet metal 73 and a support plate 74. The anti-collision mounting sheet metal 73 is fixedly connected to the anti-collision rod 71 and is located on a side away from the stirring mounting plate 1. The support plate 74 is detachably connected to the anti-collision mounting sheet metal 73 and is located on a side away from the anti-collision rod 71.

[0037] In this embodiment, the support plate 74 can be replaced with different heights according to actual conditions, and the anti-collision mounting sheet metal 73 and the support plate 74 can be adjusted in position to maintain rigidity.

[0038] Furthermore, the anti-collision rod 71 is a rigid metal rod.

[0039] In this embodiment, the rigid metal rod can prevent the stirring mounting plate 1 from being hit, thereby increasing its service life.

[0040] Furthermore, the stirring assembly 4 includes at least two groups of stirring needles 41 and a stirring needle mounting plate 42 .

[0041] In this embodiment, the stirring assembly 4 may include three groups of eighteen stirring needles 41, which can realize continuous clockwise and counterclockwise reversal motion, improve stirring efficiency, and enhance stirring effect. The stirring mounting plate 1 is used to fix the stirring needles 41, and may include a sample stirring group, an R1 reagent stirring group, and an R2 reagent stirring group, which are installed on the same stirring mounting plate 1, and the installation position cannot be adjusted, so as to realize the function of stirring samples and reagents at the same time.

[0042] Furthermore, the matching tolerance between the positioning hole 11 and the anti-collision rod 71 is smaller than the distance between the stirring needle 41 and the inner wall of the reaction cup when the stirring needle 41 is located at the center of the reaction cup.

[0043] In this embodiment, the fitting tolerance is smaller than the distance between the stirring needle 41 and the inner wall of the reaction cup when the stirring needle 41 is located at the center of the reaction cup, so that the stirring mounting plate 1 falls. When the anti-collision rod 71 is located in the positioning hole 11 and performs curved motion, before the stirring assembly 4 reaches the inner wall of the reaction cup at the center of the reaction cup, the stirring mounting plate 1 has touched the travel switch 72, triggering an early warning, and the instrument stops moving to prevent collision.

[0044] Furthermore, the reaction disk motion positioning assembly 6 includes a reaction disk code disk 61, a first positioning optical coupler 62 and a second positioning optical coupler 63. The reaction disk code disk 61 is fixedly connected to the reaction disk 5 and is located on the side of the stirring assembly 4 away from the stirring mounting plate 1. The reaction disk code disk 61 has code disk teeth 611. The number of the code disk teeth 611 is multiple, and the multiple code disk teeth 611 are evenly distributed in the circumferential direction of the reaction disk code disk 61. The first positioning optical coupler 62 and the second positioning optical coupler 63 are respectively arranged relative to different code disk teeth 611.

[0045] In this embodiment, the first positioning optocoupler 62 and the second positioning optocoupler 63 are also called optocouplers or optocouplers, or optocouplers for short. It is a device that uses light as a medium to transmit electrical signals. Usually, the light emitter (infrared light emitting diode LED) and the light receiver (photosensitive semiconductor tube, photoresistor) are encapsulated in the same tube shell. When an electrical signal is applied to the input end, the light emitter emits light, and the light receiver generates a photocurrent after receiving the light, which flows out from the output end, thereby realizing the "electric-light-electric" conversion. The optocoupler that uses light as a medium to couple the input signal to the output end has the advantages of small size, long life, no contact, strong anti-interference ability, insulation between output and input, and unidirectional signal transmission. The first positioning optical coupler 62 and the second positioning optical coupler 63 are electrically connected to the controller, and the model may be PC817A-C. The installation spacing of the first positioning optical coupler 62 and the second positioning optical coupler 63 satisfies the corresponding tooth gap spacing, so that the sensing point of the first positioning optical coupler 62 falls on the front edge of the code disk tooth 611, and the sensing point of the second positioning optical coupler 63 falls on the rear edge of the code disk tooth 611 at a preset distance, so that when the reaction disk 5 stops rotating, the position of the reaction cup is fixed and corresponds to the stop position of the stirring component 4. Regardless of whether the reaction code disk is offset clockwise or counterclockwise, the first positioning optical coupler 62 and the second positioning optical coupler 63 will be triggered, so that the controller issues a command to prohibit the reaction disk 5 motor from stopping driving the reaction disk 5 to rotate, and the stirring mounting plate 1 and the stirring component 4 perform any action, thereby realizing the electronic interlocking anti-collision function and achieving the anti-collision purpose. If the first positioning optical coupler 62 and the second positioning optical coupler 63 fail, the controller will also issue a command to make the stirring mounting plate 1 and the stirring assembly 4 inoperable, thereby achieving the anti-collision function.

[0046] Furthermore, the reaction disk motion positioning assembly 6 also includes an optocoupler mounting sheet metal 64 and an adjusting screw 65. The optocoupler mounting sheet metal is fixedly connected to the first positioning optocoupler 62 and the second positioning optocoupler 63, and is located on one side of the reaction disk code disk 61. The adjusting screw 65 is threadedly connected to the optocoupler mounting sheet metal 64 and is located on one side of the optocoupler mounting sheet metal 64.

[0047] In this embodiment, the optical coupling mounting sheet metal 64 and the adjusting screw 65 can be fine-tuned to adjust the initial position of the stirring assembly 4 to the center of the reaction cup, and cooperate with the adjusting structure of the anti-collision rod 71 to balance the entire biochemical stirring anti-collision system 100, ensuring that the relative position of the stirring assembly 4 and the reaction cup remains unchanged. For example, the optical coupling mounting sheet metal 64 is threadedly connected to different positions of the bottom plate, and the adjusting screw 65 is located at different positions of the bottom plate and is threadedly connected to different positions of the optical coupling mounting sheet metal 64.

[0048] Second, see Figure 5 The present invention provides a biochemical stirring anti-collision control method, comprising:

[0049] S101, receiving a stop signal sent by the travel switch 72, controlling the drive assembly 3 to stop driving the stirring mounting plate 1 to rotate and move up and down;

[0050] S102, receiving the first position signal and the second position signal of the corresponding code disk tooth 611 detected by the first positioning optical coupler 62 and the second positioning optical coupler 63, and determining whether the first position is at the first preset position and whether the second position is at the second preset position; if not, controlling the reaction disk 5 motor to stop driving the reaction disk 5 to rotate, and the driving assembly 3 to stop driving the stirring mounting plate 1 to rotate and move up and down.

[0051] In this embodiment, the controller is electrically connected to the first motor and the second motor of the drive assembly 3, and is electrically connected to the first positioning optical coupler 62, the second positioning optical coupler 63 and the reaction disk 5 motor. When the instrument is abnormal or the operator makes an operation error, the stirring mounting plate 1 falls and touches the travel switch 72, and the controller receives a stop signal, stops driving the first motor to drive the stirring mounting plate 1 to rotate, and the second motor to drive the stirring mounting plate 1 to move up and down, and the stirring assembly 4 stops rotating to prevent the stirring assembly 4 from colliding. At the same time, the controller receives the first position signal and the second position signal of the corresponding code disk tooth 611 detected by the first positioning optical coupler 62 and the second positioning optical coupler 63, and determines whether the first position is in the first preset position and whether the second position is in the second preset position. If not, the reaction disk 5 motor is controlled to stop driving the reaction disk 5 to rotate, that is, the reaction disk code disk 61 is offset clockwise or counterclockwise, and the drive assembly 3 stops driving the stirring mounting plate 1 to rotate and move up and down. Electronic interlocking anti-collision is achieved to protect the stirring assembly 4 from damage, avoid losses, and reduce the cost of instrument use.

[0052] What is disclosed above is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. A biochemical stirring anti-collision system, characterized in that: The invention comprises a stirring mounting plate, a rotating shaft, a driving component, a stirring component, a reaction disk, a reaction disk motion positioning component and a stirring positioning anti-collision component, wherein the rotating shaft passes through the stirring mounting plate and is fixedly connected to the stirring mounting plate, and the center line of the rotating shaft coincides with the center line of the stirring mounting plate, the driving component is transmission-connected with the rotating shaft, and drives the stirring mounting plate to rotate and move up and down, the stirring mounting plate has a positioning hole, the number of the positioning holes and the stirring components are at least three, at least three stirring components are rotationally connected to the stirring mounting plate and are evenly distributed in the circumferential direction of the rotating shaft, each of the positioning holes is located between two adjacent stirring components, the reaction disk is located on a side of the stirring component away from the stirring mounting plate, a reaction cup is placed on the reaction disk, and the reaction disk motion positioning component is located on a side of the reaction disk away from the stirring mounting plate; The stirring positioning anti-collision assembly includes an anti-collision rod and a travel switch, wherein the anti-collision rod is located in the orthographic projection direction of the positioning hole and is matched with the stirring mounting plate through the clearance of the positioning hole, and the travel switch is fixedly connected to the anti-collision rod and is located on a side close to the positioning hole; The driving assembly includes a first motor, a first rotating wheel, a second rotating wheel, a conveyor belt, a second motor, a sliding member, a holding member and an elastic member, the output end of the first motor is drivingly connected to the first rotating wheel, the second rotating wheel is fixedly connected to the rotating shaft, the conveyor belt is rotatably connected to the first rotating wheel and the second rotating wheel, the output end of the second motor is drivingly connected to the sliding member to drive the sliding member to move up and down, the holding member is fixedly connected to the sliding member and the rotating shaft, and is held between the second rotating wheel and the elastic member; the anti-collision bar is located directly below the positioning hole, the reaction cup is placed at a preset position on the reaction disk, the stirring mounting plate is at a position higher than the reaction cup, and the stirring mounting plate and the stirring assembly can perform a downward linear motion; The first motor drives the stirring mounting plate to rotate, so that the stirring component is located directly above the center of the reaction cup. The first motor stops moving, and the second motor drives the rotating shaft to move downward, thereby driving the stirring mounting plate to move downward, and further driving the stirring component to rotate in the reaction cup for stirring; When an abnormality occurs in the instrument or a human operating error occurs, the stirring installation plate and the stirring component are forced to stop their curved motion, resulting in positional displacement, and the coordination between the stirring installation plate and the anti-collision bar fails. When the stirring installation plate moves linearly downward, it will hit the travel switch button at the top of the anti-collision bar, thereby triggering the travel switch warning, and the instrument control system will stop it from moving to prevent the stirring component from being hit and damaged; or the positioning hole of the stirring installation plate is facing the anti-collision bar when it falls, and the rigidity of the anti-collision bar is used to prevent the stirring installation plate from moving in a curved motion, thereby protecting the stirring component from continuing to collide; The travel switch comprises a first trigger part and a second trigger part, wherein the first trigger part abuts against the inner wall of the positioning hole, and the second trigger part is arranged opposite to the first trigger part, and a side away from the first trigger part abuts against the inner wall of the positioning hole, so that the instrument falls when an abnormality or a human operation error occurs. When the anti-collision rod is located in the positioning hole, the stirring mounting plate will touch the travel switch regardless of whether it rotates clockwise or counterclockwise, triggering an early warning to stop the instrument from moving, thereby avoiding collision damage to the stirring assembly. The stirring assembly includes at least two groups of stirring needles and a stirring needle mounting plate. The stirring assembly includes three groups of eighteen stirring needles, which realize continuous clockwise and counterclockwise reversal motion, improve stirring efficiency, and enhance stirring effect. The stirring mounting plate is used to fix the stirring needles, including a sample stirring group, an R1 reagent stirring group, and an R2 reagent stirring group, which are installed on the same stirring mounting plate, and the installation position is not adjustable, so as to realize the function of stirring the sample and the reagent at the same time; The matching tolerance between the positioning hole and the anti-collision rod is smaller than the distance between the stirring needle and the inner wall of the reaction cup when the stirring needle is located at the center of the reaction cup, so that the stirring mounting plate falls down, and when the anti-collision rod is located in the positioning hole and performs a curved motion, before the center of the reaction cup reaches the inner wall of the reaction cup, the stirring mounting plate has touched the travel switch, triggering an early warning, and the instrument stops moving to prevent collision; The reaction disk motion positioning assembly includes a reaction disk code disk, a first positioning optical coupler and a second positioning optical coupler. The reaction disk code disk is fixedly connected to the reaction disk and is located on a side of the stirring assembly away from the stirring mounting plate. The reaction disk code disk has code disk teeth, and the number of the code disk teeth is multiple. The multiple code disk teeth are evenly distributed in the circumferential direction of the reaction disk code disk. The first positioning optical coupler and the second positioning optical coupler are respectively arranged relative to different code disk teeth.

2. The biochemical stirring anti-collision system according to claim 1, characterized in that: The anti-collision rod has a step, the step is integrally formed with the anti-collision rod and is located in the circumferential direction of the anti-collision rod.

3. The biochemical stirring anti-collision system according to claim 1, characterized in that: The stirring positioning anti-collision assembly also includes an anti-collision mounting sheet metal and a support plate. The anti-collision mounting sheet metal is fixedly connected to the anti-collision rod and is located on a side away from the stirring mounting plate. The support plate is detachably connected to the anti-collision mounting sheet metal and is located on a side away from the anti-collision rod.

4. The biochemical stirring anti-collision system according to claim 3, characterized in that: The anti-collision rod is a rigid metal rod.

5. The biochemical stirring anti-collision system according to claim 1, characterized in that: The reaction disk motion positioning assembly also includes an optocoupler mounting sheet metal and an adjusting screw. The optocoupler mounting sheet metal is fixedly connected to the first positioning optocoupler and the second positioning optocoupler and is located on one side of the reaction disk code disk. The adjusting screw is threadedly connected to the optocoupler mounting sheet metal and is located on one side of the optocoupler mounting sheet metal.

6. A biochemical stirring anti-collision control method, applicable to the biochemical stirring anti-collision system according to any one of claims 1 to 5, characterized in that: include: Receiving the stop signal sent by the travel switch, the driving component is controlled to stop driving the stirring mounting plate to rotate and move up and down; The first position signal and the second position signal of the corresponding code disk teeth detected by the first positioning optical coupler and the second positioning optical coupler are received, and it is determined whether the first position is at the first preset position and whether the second position is at the second preset position. If not, the reaction disk motor is controlled to stop driving the reaction disk to rotate, and the drive component stops driving the stirring mounting plate to rotate and move up and down.

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