Non-contact rotating device monitoring system

Abstract

The invention discloses a non-contact rotating device monitoring system, and relates to a non-contact rotating device. The non-contact rotating device monitoring system comprises a mixing cup, a driving mechanism is arranged above the mixing cup, and a transmission mechanism is arranged on the lower surface of a cup cover of the mixing cup. The driving mechanism comprises a rotating motor and a first annular magnet. The first annular magnet is arranged on a driving shaft of the rotating motor in a sleeving mode and rotates synchronously with the driving shaft of the rotating motor. The transmission mechanism comprises a stirring paddle and a second annular magnet, the second annular magnet is arranged on a paddle body of the stirring paddle in a sleeving mode and drives the stirring paddle to rotate, and the first annular magnet drives the second annular magnet to do synchronous movement through magnetic field force. The device further comprises a magnetic field detection circuit board, the fixed end of the magnetic field detection circuit board is arranged in the driving mechanism, the detection end of the magnetic field detection circuit board extends downwards to one side of the second annular magnet, and the magnetic field detection circuit board is externally connected with an upper computer through a signal line. Through the arrangement, non-contact rotation of the stirring paddle is realized, and detection of rotation data of the stirring paddle is realized through the arrangement of the magnetic field detection circuit board.

Description

Technical Field

[0001] The invention relates to the field of non-contact rotating devices, in particular to a non-contact rotating device monitoring system. Background Art

[0002] In the biopharmaceutical field, the stirring of biological preparations is very important. It ensures the uniform mixing of various ingredients, which is crucial for the consistency and reproducibility of the preparation. For example, when preparing vaccines or biological drugs, active ingredients, stabilizers, buffers, etc. need to be accurately mixed to ensure that each dose of the preparation has the same efficacy and safety.

[0003] At present, there is no rotating device that uses a non-contact rotating method to stir biological agents. In addition, it is also very important to monitor the biological agents during the stirring process. The traditional detection method reads data in a contact form, and does not completely isolate magnetic control, resulting in high difficulty in after-sales maintenance in medical, industrial, military and other environments. The non-contact monitoring method can be based on N / S pole detection. This calculation of electrical signal output, with the development of new material technology, calculates the output signal of the magnetic induction chip, and uses the operational amplification piezoelectric effect to convert the detected object into an electrical signal through the speed of the rotation. After the AD chip piezoelectric, it can provide the advantage of anti-interference signal electrical output, which is one of the most accurate current signal detection methods.

[0004] In summary, there is an urgent need for a non-contact rotating device monitoring system for stirring biological agents. Summary of the invention

[0005] In order to solve the above-mentioned problem and related problems, the first aspect of the present invention provides a non-contact rotating device monitoring system, which realizes the non-contact rotation of the stirring paddle and can detect the rotation data of the stirring paddle.

[0006] A non-contact rotating device monitoring system includes a mixing cup, a driving mechanism is provided above the mixing cup, and a transmission mechanism is provided on the lower surface of the cup cover of the mixing cup. The driving mechanism includes a rotating motor and a first annular magnet. The first annular magnet is sleeved on the driving shaft of the rotating motor and rotates synchronously with the driving shaft of the rotating motor. The transmission mechanism includes a stirring paddle and a second annular magnet, the second annular magnet is sleeved on the paddle body of the stirring paddle and drives the stirring paddle to rotate, and the first annular magnet drives the second annular magnet to move synchronously through the magnetic field force. It also includes a magnetic field detection circuit board, the fixed end of the magnetic field detection circuit board is provided on one side of the first annular magnet, the detection end of the magnetic field detection circuit board extends downward to one side of the second annular magnet, and the magnetic field detection circuit board is externally connected to a host computer through a signal line.

[0007] In a feasible implementation, a through slot is provided on the cup cover of the mixing cup. A fixing plate and an adjusting screw are further provided in the driving mechanism, and the fixing end of the magnetic field detection circuit board is movably connected to the fixing plate through the adjusting screw. The detection end of the magnetic field detection circuit board passes through the through slot and extends downward to one side of the second annular magnet.

[0008] In a feasible implementation, a first protective shell is provided on the lower surface of the driving mechanism, the magnetic field detection circuit board is provided in the first protective shell, and the first protective shell passes through the through slot and extends downward to one side of the second annular magnet.

[0009] In a feasible implementation manner, a second protective shell corresponding to the position of the through slot is further provided on the lower surface of the cup cover of the mixing cup, the first protective shell is provided in the second protective shell, and the second protective shell extends downward to one side of the second annular magnet.

[0010] In a feasible implementation, the magnetic field detection circuit board includes a signal receiver, a Hall sensor and an RC circuit. The Hall sensor is used to detect the magnetic flux of the second annular magnet and transmit the signal to the signal receiver, and the RC circuit filters the signal.

[0011] In a feasible implementation manner, the driving mechanism further includes a height detection member, and a detection end of the height detection member extends out of the lower surface of the driving mechanism.

[0012] In a feasible embodiment, the mixing cup further includes a lifting mechanism disposed on one side of the mixing cup, the lifting mechanism being connected to the driving mechanism and driving the driving mechanism to move up and down.

[0013] In a feasible implementation manner, the cup body of the mixing cup is transparent, and scales are provided on the outer surface of the cup body of the mixing cup.

[0014] In a feasible implementation, a plurality of liquid injection connectors are provided on the cup cover of the mixing cup, and the liquid injection connectors are externally connected to the liquid injection hose and communicated with the inner cavity of the mixing cup.

[0015] The second aspect of the present invention provides a method for using the non-contact rotating device monitoring system according to the first aspect of the present invention, comprising at least the following steps:

[0016] S1): start the rotating motor, and the first annular magnet rotates synchronously with the rotating motor;

[0017] S2): the first annular magnet drives the second annular magnet to rotate synchronously through the magnetic field force, and the second annular magnet drives the stirring paddle to rotate synchronously;

[0018] S3): The magnetic flux of the second annular magnet is detected by the magnetic field detection circuit board and fed back to the host computer.

[0019] The present invention provides a non-contact rotating device monitoring system, which has the following beneficial effects:

[0020] 1) The present invention realizes non-contact rotation of the stirring paddle by providing a rotating motor, a first annular magnet and a second annular magnet, and realizes detection of rotation data of the stirring paddle by providing a magnetic field detection circuit board, while improving the flexibility, usability and applicability of the device.

[0021] 2) The present invention directly detects the magnetic field of the second annular magnet, thereby effectively avoiding the detection error of the contact detection method and ensuring the accuracy of the detection data.

[0022] 3) The present invention uses a strong magnet to reduce the idling error between the first annular magnet and the second annular magnet, while improving the rotation recognition of the transmission mechanism, reducing current loss, and increasing the stability of the rotating mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a cross-sectional view of the present invention.

[0024] Figure 2 It is a schematic diagram of the overall structure of the present invention.

[0025] Figure 3 It is a side view of the present invention.

[0026] Figure 4 This is a circuit diagram of the magnetic field detection circuit board of the present invention.

[0027] Figure 5 This is the principle of the Hall sensor of the present invention.

[0028] Figure 6 This is a circuit logic diagram of the Hall sensor of the present invention.

[0029] Figure 7 This is a module diagram of the magnetic field detection circuit board of the present invention.

[0030] Reference numerals

[0031] Mixing cup 1

[0032] Through slot 11

[0033] Second protective shell 12

[0034] Injection joint 13

[0035] Driving mechanism 2

[0036] Rotating motor 21

[0037] First annular magnet 22

[0038] Fixed plate 23

[0039] Adjusting screw 24

[0040] First protective shell 25

[0041] Height detection part 26

[0042] Transmission mechanism 3

[0043] Stirring paddle 31

[0044] Second annular magnet 32

[0045] Magnetic field detection circuit board 4

[0046] Lifting mechanism 5 DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the field without creative work belong to the scope of protection of the present invention. In the description of the present invention, it should be noted that the orientation or position relationship indicated by the terms "left side", "right side", "upper side", "lower side", "above", "below" and the like is based on the orientation or position relationship shown in the drawings, which is 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 a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0048] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] Furthermore, in the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0050] The present invention provides a non-contact rotating device monitoring system, referring to Figure 1, including a mixing cup 1, a driving mechanism 2 is provided above the mixing cup 1, and a transmission mechanism 3 is provided on the lower surface of the cup cover of the mixing cup 1. The driving mechanism 2 includes a rotating motor 21 and a first annular magnet 22, and the first annular magnet 22 is sleeved on the driving shaft of the rotating motor 21 and rotates synchronously with the driving shaft of the rotating motor 21. The transmission mechanism 3 includes a mixing paddle and a second annular magnet 32, and the second annular magnet 32 ​​is sleeved on the paddle body of the mixing paddle and drives the mixing paddle to rotate, and the first annular magnet 22 drives the second annular magnet 32 ​​to move synchronously through the magnetic field force. It also includes a magnetic field detection circuit board 4, the fixed end of the magnetic field detection circuit board 4 is arranged in the driving mechanism 2, the detection end of the magnetic field detection circuit board 4 extends downward to one side of the second annular magnet 32, and the magnetic field detection circuit board 4 is externally connected to the host computer through a signal line. When the present invention is in use, the rotating motor 21 starts to rotate and drives the first annular magnet 22 to rotate synchronously. The first annular magnet 22 and the second annular magnet 32 ​​are non-contactly connected through the magnetic field force. When the first annular magnet 22 rotates, the second annular magnet 32 ​​follows the first annular magnet 22 to rotate synchronously. The rotation of the second annular magnet 32 ​​will drive the stirring paddle 31 to rotate synchronously. At this time, the magnetic field detection circuit board 4 will detect the number of rotations of the second annular magnet 32 ​​to obtain the actual number of rotations of the stirring paddle 31. Because the magnet is divided into two parts, one is the N pole and the other is the S pole, the same poles attract each other, and the opposite poles repel each other. The magnetic field and the magnet are placed together. Because of the repulsion or attraction, this force can never be balanced, and all magnetic fields will rotate with it. Through the above-mentioned arrangement, the present invention realizes the non-contact rotation of the mixing slurry, and can detect the number of rotations of the mixing slurry in real time, which improves the flexibility, usability and applicability of the device. Preferably, the first annular magnet 22 and the second annular magnet 32 ​​are preferably strong magnets, and the strong magnets are tens to hundreds of times more attractive than ordinary magnets, and the strong magnets are within 5mm. The present invention adopts a strong magnet to reduce the idling error between the first annular magnet 22 and the second annular magnet 32, while improving the rotation recognition of the transmission mechanism, reducing current loss, and increasing the stability of the rotating mechanism. The meaning of the idling error is: if the rotation of the first annular magnet 22 does not drive the rotation of the second annular magnet 32, it will cause the cells inside the mixing cup to overlap, and the viscous adsorbed cells will not be alive enough to die. The meaning of rotation recognition is: if the rotation of the first annular magnet 22 drives the rotation of the second annular magnet 32, and the magnetic field detection circuit board 4 detects the rotation of the second annular magnet 32, it will not cause the cells inside the mixing cup 1 to overlap, and the viscous adsorbed cells will not be alive enough to die. The meaning of current loss is: if the rotation of the first annular magnet 22 does not drive the rotation of the second annular magnet 32, the first annular magnet 22 rotates, and the second annular magnet 32 ​​idles, current loss will occur.

[0051] In the non-contact rotating device monitoring system provided by the present invention, refer to Figure 1 and Figure 2 The cup cover of the mixing cup 1 is provided with a through slot 11, and the driving mechanism 2 is also provided with a fixed plate 23 and an adjusting screw 24. The fixed end of the magnetic field detection circuit board 4 is movably connected to the fixed plate 23 through the adjusting screw 24, and the detection end of the magnetic field detection circuit board 4 passes through the through slot 11 and extends downward to the side of the second annular magnet 32. The adjusting screw 24 mainly adjusts the distance D1 between the magnetic field detection circuit board 4 and the second annular magnet 32. When the magnetic flux B detected by the magnetic field detection circuit board 4 is also called magnetic induction intensity or magnetic induction density, when the magnetic flux B is too large, tighten the adjusting screw 24, then the distance between the magnetic field detection circuit board 4 and the fixed plate 23 is shortened, and the distance D1 between the magnetic field detection circuit board 4 and the second annular magnet 32 ​​is increased. Similarly, when the magnetic flux B is too small, loosen the adjusting screw 24, then the distance between the magnetic field detection circuit board 4 and the fixed plate 23 is increased, and the distance D1 between the magnetic field detection circuit board 4 and the second annular magnet 32 ​​is reduced.

[0052] In the non-contact rotating device monitoring system provided by the present invention, refer to Figure 1 , a first protective shell 25 is provided on the lower surface of the driving mechanism 2, and the magnetic field detection circuit board 4 is provided in the first protective shell 25, and the first protective shell 25 passes through the through slot 11 and extends downward to the side of the second annular magnet 32. Furthermore, a second protective shell 12 corresponding to the position of the through slot 11 is also provided on the lower surface of the cup cover of the mixing cup 1, and the first protective shell 25 is provided in the second protective shell 12, and the second protective shell 12 extends downward to the side of the second annular magnet 32. The materials of the first protective shell 25 and the second protective shell 12 are usually selected from materials that do not interfere with the magnetic field signal, such as plastic. The first protective shell 25 and the second protective shell 12 can effectively protect the magnetic field detection circuit board 4 from external collisions, thereby improving the safety of the device when in use.

[0053] In the non-contact rotating device monitoring system provided by the present invention, refer to Figure 4 and Figure 7 The magnetic field detection circuit board 4 includes a signal receiver, a Hall sensor and an RC circuit. The Hall sensor is used to detect the magnetic flux of the second annular magnet 32 ​​and transmit the signal to the signal receiver. The RC circuit filters the signal. Generally speaking, the RC circuit uses an RC parallel circuit to filter the signal transmitted by the Hall sensor. The model of the Hall sensor is usually not limited. The more commonly used model is 44E-JSM produced by Jsmicro. The model of the signal receiver is usually not limited. The more commonly used model is JP1. The principle of the Hall sensor can be found in Figure 6 The Hall sensor chip and the operational amplifier form a differential circuit. The sine wave signal output by the operational amplifier is converted into a square wave signal through the Schmitt trigger oscillation, and then the square wave signal is amplified and output by the transistor. The detection principle of the Hall sensor can be found in Figure 5 , when the magnetic flux B is greater than the working point Bop, the output is kept at a low level until the magnetic flux B is less than the release point Brp, and the output is at a high level. Finally, by reading and analyzing the level changes on the signal receiver, the number of rotations of the second annular magnet 32 ​​can be known. One high and one low represent that the second annular magnet 32 ​​rotates one circle, that is, the number of rotations of the stirring paddle 31. The advantage of this detection mode is that it detects the actual number of rotations of the stirring paddle 31 rather than the number of rotations of the drive shaft of the rotating motor 21. There is a difference between the two. For example, the rotating motor 21 adopts a combination of a servo motor and an encoder, then the signal collected by the encoder is actually the number of rotations of the servo motor. However, when the first annular magnet 2221 drives the second annular magnet 32, especially when the speed is fast, a certain amount of lag or deviation will be generated. Secondly, the material in the stirring cup will produce resistance to the stirring paddle 31, and the resistance will also cause a certain amount of or deviation of the second annular magnet 32. In this way, there will be a deviation between the number of rotations of the rotating motor 21 and the number of rotations of the stirring paddle 31. However, the present invention can effectively avoid such deviation by directly testing the second annular magnet 32, thereby ensuring the accuracy of the test data.

[0054] In the non-contact rotating device monitoring system provided by the present invention, refer to Figure 1 , further comprising a lifting mechanism 5 disposed on one side of the mixing cup 1, the lifting mechanism 5 being connected to the driving mechanism 2 and driving the driving mechanism 2 to move up and down. Figure 1 The lifting mechanism 5 is a structure similar to a tower crane, which can lift or lower the driving mechanism 2.

[0055] In the non-contact rotating device monitoring system provided by the present invention, refer to Figure 1 , the driving mechanism 2 also includes a height detection member 26, and the detection end of the height detection member 26 extends out of the lower surface of the driving mechanism 2. The height detection mechanism is usually used in conjunction with the lifting mechanism 5. The detection end of the height detection mechanism detects the distance D2 between the detection end and the upper surface of the cup cover of the mixing cup, and the detection means usually uses infrared ranging. When the magnetic flux between the first annular magnet 22 and the second annular magnet 32 ​​is too strong, the driving mechanism 2 can be lifted by the lifting mechanism 5 to increase the distance D2; when the magnetic flux between the first annular magnet 22 and the second annular magnet 32 ​​is too small, the driving mechanism 2 can be lowered by the lifting mechanism 5 to reduce the distance D2.

[0056] In the non-contact rotating device monitoring system provided by the present invention, refer to Figure 2 or Figure 3The cup body of the mixing cup 1 is transparent, and a scale is provided on the outer surface of the cup body of the mixing cup 1, so that the operator can better observe the volume of the mixture in the mixing cup 1.

[0057] In the non-contact rotating device monitoring system provided by the present invention, refer to Figure 1 or Figure 2 The injection connector 13 is connected to an injection hose and communicates with the inner cavity of the mixing cup 1. The injection hose is usually connected to a pump body, such as a peristaltic pump, so that the lid of the mixing cup can be opened to complete the injection function during the injection, thereby preventing damage to other related components during the process of opening and closing the lid.

[0058] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A non-contact rotating device monitoring system, characterized in that: It comprises a mixing cup (1), wherein a driving mechanism (2) is provided on the top of the mixing cup (1), and a transmission mechanism (3) is provided on the lower surface of a cup cover of the mixing cup (1); The driving mechanism (2) comprises a rotating motor (21) and a first annular magnet (22); the first annular magnet (22) is sleeved on a driving shaft of the rotating motor (21) and rotates synchronously with the driving shaft of the rotating motor (21); the transmission mechanism (3) comprises a stirring paddle (31) and a second annular magnet (32); the second annular magnet (32) is sleeved on a paddle body of the stirring paddle (31) and drives the stirring paddle (31) to rotate; the first annular magnet (22) drives the second annular magnet (32) to move synchronously through a magnetic field force; It also comprises a magnetic field detection circuit board (4), wherein a fixed end of the magnetic field detection circuit board (4) is arranged on one side of the first annular magnet (22), a detection end of the magnetic field detection circuit board (4) extends downward to one side of the second annular magnet (32), and the magnetic field detection circuit board (4) is externally connected to a host computer via a signal line.

2. The non-contact rotating device monitoring system according to claim 1, characterized in that: The cup cover of the mixing cup (1) is provided with a through slot (11); the driving mechanism (2) is further provided with a fixing plate (23) and an adjusting screw (24); the fixing end of the magnetic field detection circuit board (4) is movably connected to the fixing plate (23) via the adjusting screw (24); the detection end of the magnetic field detection circuit board (4) passes through the through slot (11) and extends downward to one side of the second annular magnet (32).

3. The non-contact rotating device monitoring system according to claim 2, characterized in that: A first protective shell (25) is provided on the lower surface of the driving mechanism (2), the magnetic field detection circuit board (4) is arranged in the first protective shell (25), and the first protective shell (25) passes through the through slot (11) and extends downward to one side of the second annular magnet (32).

4. The non-contact rotating device monitoring system according to claim 3, characterized in that: The lower surface of the cup cover of the mixing cup (1) is also provided with a second protective shell (12) corresponding to the position of the through slot (11); the first protective shell (25) is arranged in the second protective shell (12); and the second protective shell (12) extends downward to one side of the second annular magnet (32).

5. The non-contact rotating device monitoring system according to claim 1 or 2, characterized in that: The magnetic field detection circuit board (4) comprises a signal receiver, a Hall sensor and an RC circuit; the Hall sensor is used to detect the magnetic flux of the second annular magnet (32) and transmit the signal to the signal receiver, and the RC circuit filters the signal.

6. The non-contact rotating device monitoring system according to claim 1 or 2, characterized in that: The driving mechanism (2) further comprises a height detection member (26), wherein a detection end of the height detection member (26) extends out of the lower surface of the driving mechanism (2).

7. The non-contact rotating device monitoring system according to claim 1 or 2, characterized in that: It also comprises a lifting mechanism (5) arranged on one side of the mixing cup (1); the lifting mechanism (5) is connected to the driving mechanism (2) and drives the driving mechanism (2) to move up and down.

8. The non-contact rotating device monitoring system according to claim 1, characterized in that: The cup body of the mixing cup (1) is transparent, and scales are provided on the outer surface of the cup body of the mixing cup (1).

9. The non-contact rotating device monitoring system according to claim 1, characterized in that: The cup cover of the mixing cup (1) is provided with a plurality of liquid injection joints (13), and the liquid injection joints (13) are externally connected to a liquid injection hose and are in communication with the inner cavity of the mixing cup (1).

10. A method for using the non-contact rotating device monitoring system according to claims 1 to 9, characterized in that: At least the following steps are included: S1): starting the rotating motor (21), and the first annular magnet (22) rotates synchronously with the rotating motor (21); S2): the first annular magnet (22) drives the second annular magnet (32) to rotate synchronously through the magnetic field force, and the second annular magnet (32) drives the stirring paddle (31) to rotate synchronously; S3): The magnetic flux of the second annular magnet (32) is detected by a magnetic field detection circuit board (4) and fed back to the host computer.

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