Centrifugal machine rotor identification system and method, controller and centrifugal machine

Abstract

The invention relates to the technical field of centrifugal machines, in particular to a centrifugal machine rotor recognition system and method, a controller and a centrifugal machine. The centrifuge rotor identification system comprises: a seat part provided with a Hall sensor; the rotating shaft rotates relative to the seat part under the driving of the driving device and is constructed to be selectively connected with various types of centrifugal machine rotors, and each type of centrifugal machine rotor is provided with a plurality of magnetic elements which are arranged around the rotating shaft at equal angles; the controller is configured to receive a centrifugal instruction, and the centrifugal instruction carries a target rotating speed of centrifugal treatment set by a user; if the target rotating speed is larger than the first rotating speed, the rotating shaft is controlled to rotate at the first rotating speed, the model of a centrifugal machine rotor currently connected to the rotating shaft is determined according to the first rotating speed and a magnetic signal which is sensed by a Hall sensor and influenced by a magnetic element, and the rotating shaft is controlled to rotate at the target rotating speed.

Description

Technical Field

[0001] The present application relates to the technical field of centrifuges, and in particular to a centrifuge rotor identification system and method, a controller, and a centrifuge. Background Art

[0002] Centrifuges are often used to separate substances in samples in fields such as biomedicine. Many centrifuges are equipped with several different rotor models (specifications), allowing users to select the appropriate rotor based on the specific sample being separated. The rotor is then loaded with a centrifuge tube containing the sample to be centrifuged.

[0003] During centrifugation, some centrifuges can determine other parameters besides the centrifugation speed and duration based on the type of rotor currently installed. For example, the operating status of the compressor in the temperature control system that provides temperature control for the centrifuge environment. Therefore, it is necessary for the centrifuge to be able to automatically and accurately determine the type of rotor currently installed. Summary of the Invention

[0004] In view of this, the present application proposes a centrifuge rotor identification system and method, a controller, and a centrifuge.

[0005] In a first aspect, a centrifuge rotor identification system is proposed, comprising:

[0006] The seat portion is provided with a Hall sensor;

[0007] a rotating shaft extending upward from the base and rotating relative to the base under the drive of the driving device, wherein the rotating shaft is configured to selectively engage with a plurality of types of centrifuge rotors, each of the plurality of types of centrifuge rotors having a plurality of magnetic elements arranged at equal angles around the rotating shaft, and any two types of centrifuge rotors having different numbers of magnetic elements;

[0008] A controller is electrically connected to the Hall sensor and the driving device and is configured to:

[0009] receiving a centrifugation instruction, wherein the centrifugation instruction carries a target speed of centrifugation set by a user;

[0010] determining whether the target speed is greater than a first speed;

[0011] If the target speed is greater than the first speed, the rotating shaft is controlled to rotate at the first speed, and the model of the centrifuge rotor currently coupled to the rotating shaft is determined based on the first speed and the magnetic signal sensed by the Hall sensor and affected by the magnetic element. Thereafter, the rotating shaft is controlled to rotate at the target speed.

[0012] In some possible implementations, the method further includes:

[0013] If the target rotation speed is less than the first rotation speed, the rotating shaft is controlled to rotate at the target rotation speed, and the model of the centrifuge rotor currently coupled to the rotating shaft is determined according to the target rotation speed and the magnetic signal sensed by the Hall sensor and affected by the magnetic element.

[0014] In some possible implementations, the centrifugation instruction carries a target duration of centrifugation set by a user;

[0015] Afterwards, controlling the rotating shaft to rotate at the target speed includes: afterward, controlling the rotating shaft to rotate at the target speed for the target time period;

[0016] If the target rotation speed is less than the first rotation speed, controlling the rotating shaft to rotate at the target rotation speed includes: if the target rotation speed is less than the first rotation speed, controlling the rotating shaft to rotate at the target rotation speed for the target time period.

[0017] In some possible implementations, the first rotation speed is 1000 rpm-2000 rpm.

[0018] In a second aspect, a centrifuge rotor identification method is proposed, which is applied to the system as described in the first aspect, and the method includes:

[0019] receiving a centrifugation instruction, wherein the centrifugation instruction carries a target speed for centrifugation set by a user;

[0020] determining whether the target speed is greater than a first speed;

[0021] If the target speed is greater than the first speed, the rotating shaft is controlled to rotate at the first speed, and the model of the centrifuge rotor currently coupled to the rotating shaft is determined based on the first speed and the magnetic signal sensed by the Hall sensor and affected by the magnetic element. Thereafter, the rotating shaft is controlled to rotate at the target speed.

[0022] In some possible implementations, the following further comprises:

[0023] If the target rotation speed is less than the first rotation speed, the rotating shaft is controlled to rotate at the target rotation speed, and the model of the centrifuge rotor currently coupled to the rotating shaft is determined according to the target rotation speed and the magnetic signal sensed by the Hall sensor and affected by the magnetic element.

[0024] In some possible implementations, the centrifugation instruction carries a target duration of centrifugation set by a user;

[0025] Afterwards, controlling the rotating shaft to rotate at the target speed includes: afterward, controlling the rotating shaft to rotate at the target speed for the target time period;

[0026] If the target rotation speed is less than the first rotation speed, controlling the rotating shaft to rotate at the target rotation speed includes: if the target rotation speed is less than the first rotation speed, controlling the rotating shaft to rotate at the target rotation speed for the target time period.

[0027] In a third aspect, a centrifuge is proposed, comprising the system described in the first aspect.

[0028] In a fourth aspect, a controller for a centrifuge is proposed, comprising:

[0029] Memory,

[0030] processor, and

[0031] program instructions stored in the memory and executable by the processor;

[0032] When the processor executes the program instructions, the method described in the second aspect is implemented.

[0033] In a fifth aspect, a computer-readable storage medium is proposed, comprising program instructions. When the program instructions are executed on a centrifuge, the centrifuge executes the method described in the second aspect.

[0034] According to the centrifuge rotor identification system provided in the present application, the model of the centrifuge rotor currently installed in the centrifuge can be accurately identified so that the centrifuge can perform relevant operations based on the corresponding model of the centrifuge rotor. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the present application, and are not limitations to the present application.

[0036] Figure 1 Schematic diagram of the structure of the centrifuge provided in the embodiment of the present application;

[0037] Figure 2 This is a flow chart of a centrifuge rotor identification method provided in an embodiment of the present application.

[0038] Description of reference numerals:

[0039] 100-centrifuge, 200-identification method;

[0040] 1- shell;

[0041] 2-chamber;

[0042] 3-cover;

[0043] 4-seat;

[0044] 5-Hall sensor;

[0045] 6-rotating shaft;

[0046] 7- Centrifuge rotor;

[0047] 8-Magnetic element;

[0048] 9- driving device;

[0049] 10-Controller. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application. It is understood that, in the absence of conflict, some technical means of the various embodiments described herein can be replaced or combined with each other.

[0051] In the description of this application, the terms "first," "second," etc., if used, are used solely to distinguish the objects being described and do not convey any order or technical meaning. Thus, an object defined as "first," "second," etc. may explicitly or implicitly include one or more of such objects. Furthermore, for example, the term "first element" alone does not imply the presence of a "second element," nor does the term "second element" alone imply the presence of a "first element." Furthermore, the terms "a" or "an," and the like, do not denote a limitation on quantity, but rather indicate the presence of at least one, and "plurality" means at least two.

[0052] In the description of this application, the terms "including" and "having" indicate the existence of the stated features, numbers, operations, elements and / or their combinations, but do not exclude the existence or addition of one or more other features, numbers, operations, elements and / or their combinations.

[0053] In the description of this application, reference to "one embodiment" or "some embodiments" means that a particular feature, structure, or characteristic described in conjunction with the embodiment is included in one or more embodiments of the application. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in other embodiments," etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized.

[0054] Figure 1 A centrifuge 100 provided in an embodiment of the present application is schematically shown. The centrifuge 100 can be used to separate related substances in a sample, such as a biological sample. The centrifuge 100 includes a shell 1 and a seat 4, a rotating shaft 6, a centrifuge rotor 7 and a controller 10 arranged in the shell 1.

[0055] The housing 1 is formed into a substantially rectangular parallelepiped shape and defines therein an upwardly open chamber 2, the opening of which is formed into a circular shape. The chamber 2 may have a circular cross-section, and its cross-sectional size is designed to accommodate various types of centrifuge rotors 7.

[0056] The lid 3 is circular in shape and rotatably connected at its edge to the top of the housing 1 via a hinge (not shown). By rotating the lid 3 about the hinge, the opening of the chamber 2 can be selectively closed or opened. Furthermore, multiple latching members (not shown) are provided at several other locations along the edge of the lid 3. When the lid 3 is rotated downward to close the opening, these latching members engage with slots in the housing 1, thereby ensuring that the lid 3 remains stably closed during centrifugation. Furthermore, the latching members can be released from the slots by user operation.

[0057] The seat 4 is fixed inside the housing 1 and has a Hall sensor 5 on its upper surface that can sense a magnetic signal. In addition, the seat 4 defines at least a portion of the lower surface of the chamber 2.

[0058] The rotating shaft 6 extends upward from the base 4, and the extended end extends to the center of the chamber 2. The rotating shaft 6 can be rotated at various set speeds by the motor 9 serving as the driving device, wherein the motor is fixed to the lower side of the base 4 inside the housing 1.

[0059] The centrifuge rotor 7 is detachably coupled to the rotating shaft 6 on the upper side of the base 4. Therefore, when the rotating shaft 6 is rotated by the drive device 9, the centrifuge rotor 7 and the centrifuge tubes placed therein rotate synchronously with the rotating shaft 6, thereby causing the sample in the centrifuge tubes to separate substances under the action of strong centrifugal force, such as producing a supernatant and a precipitate that are separated from each other. The centrifuge rotor 7 has a plurality of magnetic elements 8 arranged at equal angles around the rotating shaft 6. When the centrifuge rotor 7 rotates with the rotating shaft 6, the Hall sensor 5 can sense the changing magnetic signals generated by the rotation of the magnetic elements 8 of the centrifuge rotor 7.

[0060] The controller 10 is electrically connected to the Hall sensor 5 and the driving device 9 via a cable or wireless connection to obtain a magnetic signal from the Hall sensor 5 and control the operating state of the driving device 9 .

[0061] In the embodiment of the present application, different types of centrifuge rotors 7 can be selected to be coupled to the rotating shaft 6 to meet different centrifugal separation requirements. For example, the first type, the second type, and the third type of centrifuge rotors 7 have different configurations and / or sizes, but they have the same Figure 1 The engaging structure adapted to the rotating shaft 6 enables the three types of centrifuge rotors 7 to be selectively assembled on the rotating shaft 6 for use. It is understandable that, since different types of centrifuge rotors 7 differ in configuration and / or size, and the samples they are used for may be different, when different types of centrifuge rotors 7 are centrifugally rotated, the allowed relevant parameters (for example, the allowed temperature range around the centrifuge rotor 7, which can be achieved by controlling the operating parameters of the compressor in the temperature control system that provides temperature control for the centrifugal environment, and the controller 10 can be electrically connected to the compressor of the centrifuge 100) are different. Therefore, it is necessary to enable the centrifuge 100 to automatically identify the model information of the centrifuge rotor 7 currently connected to the rotating shaft 6, so that the controller 10 of the centrifuge 100 can determine the relevant parameters corresponding to the centrifuge rotor 7 currently connected to the rotating shaft 6 according to the model information.

[0062] To this end, in the embodiment of the present application, each of the aforementioned different types of centrifuge rotors 7 is constructed to have a plurality of magnetic elements 8 arranged at equal angles around the rotating shaft 6 (when the centrifuge rotor 7 is coupled to the rotating shaft 6), and the number of magnetic elements 8 possessed by any two types of centrifuge rotors 7 is different. Therefore, when the centrifuge rotors 7 of different models are coupled to the rotating shaft 6 and rotate at the same speed (unit: rpm) driven by the rotating shaft 6, the Hall sensor 5 will sense a magnetic signal that periodically changes at different frequencies. The frequency of the magnetic signal reflects the model of the current centrifuge rotor 7. Therefore, when the speed of the centrifuge rotor 7 is known, the number of magnetic elements 8 on the centrifuge rotor 7 can be determined based on the frequency of the magnetic signal, thereby determining the model of the centrifuge rotor 7.

[0063] For example, a first-model centrifuge rotor 7 has two magnetic elements 8 arranged along a diameter of the rotating shaft 6 at the lower end surface of the centrifuge rotor 7. A second-model centrifuge rotor 7 has three magnetic elements 8 arranged at 120° intervals around the rotating shaft 6 at the lower end surface of the centrifuge rotor 7. Furthermore, the second-model centrifuge rotor 7 has three magnetic elements 8 arranged at 90° intervals around the rotating shaft 6 at the lower end surface of the centrifuge rotor 7. Therefore, when the first-model centrifuge rotor 7 rotates at a fixed speed driven by the rotating shaft 6, the Hall sensor 5 senses a magnetic signal that periodically varies with a frequency f. When the second-model centrifuge rotor 7 rotates at the same speed driven by the rotating shaft 6, the Hall sensor 5 senses a magnetic signal that periodically varies with a frequency of 1.5f. When the third-model centrifuge rotor 7 rotates at the same speed driven by the rotating shaft 6, the Hall sensor 5 senses a magnetic signal that periodically varies with a frequency of 2f.

[0064] As described above, knowing the current rotational speed of the centrifuge rotor 7 and the frequency of the current magnetic signal allows the model of the centrifuge rotor 7 to be determined. However, when the rotational speed of the centrifuge rotor 7 is very high, the measurement accuracy requirements for the rotational speed and magnetic signal are very high, and thus relatively significant measurement errors may occur. The sensed periodic magnetic signal may also exhibit abnormal variations, resulting in possible deviations in the determined model information of the current centrifuge rotor 7.

[0065] In this regard, Figure 2 As shown, the embodiment of the present application further proposes a centrifuge rotor 7 identification method 200 to identify the model of the centrifuge rotor 7 currently engaged with the rotating shaft 6. The method 200 can be executed by the controller 10 of the centrifuge 100, and includes:

[0066] S201, receiving a centrifugation instruction, wherein the centrifugation instruction carries a target speed and a target duration for centrifugation set by a user.

[0067] In some embodiments, after the user installs the centrifuge tube containing the sample to be centrifuged into the centrifuge rotor 7 of the relevant model, engages the centrifuge rotor 7 to the rotating shaft 6 and closes the cover 3 to the opening of the chamber 2, the speed and duration of the centrifugation can be selected on the control screen of the centrifuge 100, and then clicks the "Start" control, thereby generating a centrifugation instruction transmitted to the controller 10, which carries the target speed and target duration of the centrifugation.

[0068] S202: Determine whether the target speed is greater than the first speed.

[0069] S203, if the target speed is greater than the first speed, the shaft 6 is controlled to rotate at the first speed, and the model of the centrifuge rotor 7 currently engaged to the shaft 6 is determined based on the first speed and the magnetic signal sensed by the Hall sensor 5 and affected by the magnetic element 8, and thereafter, the shaft 6 is controlled to rotate at the target speed for a target time.

[0070] The first speed may be a value preset in the controller 10 when the centrifuge 100 leaves the factory. This value is generally not adjustable by the user at a later time, and the value may be determined based on experimental testing to ensure that when various models of centrifuge rotors 7 are installed in the centrifuge 100 and rotate at the first speed, the Hall sensor 5 can sense a high-quality periodic magnetic signal, and more importantly, accurately determine the model information of the centrifuge rotor 7. Therefore, the first speed should not be too high.

[0071] The first speed should not be too low, because at a too low first speed, it takes a long time to determine the model of the centrifuge rotor 7, resulting in reduced efficiency of the centrifugal process. Therefore, the first speed can generally be between 1000 rpm and 2000 rpm. In some embodiments, the first speed is 2000 rpm.

[0072] S204, if the target speed is less than the first speed, the rotating shaft 6 is controlled to rotate at the target speed, and the model of the centrifuge rotor 7 currently engaged with the rotating shaft 6 is determined according to the target speed and the magnetic signal sensed by the Hall sensor 5 and affected by the magnetic element 8.

[0073] When the target speed is less than the first speed, it indicates that the current sample does not require excessive centrifugal intensity. If the centrifuge 100 is controlled to operate at a first speed higher than the target speed and the model of the centrifuge rotor 7 is determined based on this, the user's experimental intention may be destroyed. Moreover, after the model of the centrifuge rotor 7 is determined in this way, the centrifuge 100 needs to be slowed down to perform the originally desired low-speed centrifugation. In addition, considering that when the centrifuge 100 is operated at a target speed lower than the first speed, the model of the centrifuge rotor 7 can usually be determined more accurately (compared to the case of operating at the first speed). Therefore, when the target speed is less than the first speed, the model of the centrifuge rotor 7 currently connected to the shaft 6 can be determined based on the magnetic signal sensed by the Hall sensor 5 and the target speed while the centrifuge 100 is operating at the target speed to centrifuge the sample.

[0074] Since in the embodiment of the present application, the model identification of the centrifuge rotor 7 is mainly achieved based on the seat 4, the Hall sensor 5, the rotating shaft 6 and the controller 10, the combination of the seat 4, the Hall sensor 5, the rotating shaft 6 and the controller 10 can be called a centrifuge rotor 7 identification system.

[0075] In the embodiment of the present application, the controller 10 includes: a memory, a processor, and program instructions stored in the memory and executable by the processor. When the processor executes the program instructions, the method 200 is implemented.

[0076] The embodiment of the present application further provides a computer-readable storage medium including program instructions. When the program instructions are executed on the centrifuge 100 , the centrifuge 100 executes the above method 200 .

Claims

1. A centrifuge rotor identification system, characterized in that: include: The seat portion is provided with a Hall sensor; a rotating shaft extending upward from the base and rotating relative to the base under the drive of the driving device, wherein the rotating shaft is configured to selectively engage with a plurality of types of centrifuge rotors, each of the plurality of types of centrifuge rotors having a plurality of magnetic elements arranged at equal angles around the rotating shaft, and any two types of centrifuge rotors having different numbers of magnetic elements; A controller is electrically connected to the Hall sensor and the driving device and is configured to: receiving a centrifugation instruction, wherein the centrifugation instruction carries a target speed of centrifugation set by a user; determining whether the target speed is greater than a first speed; If the target speed is greater than the first speed, the rotating shaft is controlled to rotate at the first speed, and the model of the centrifuge rotor currently coupled to the rotating shaft is determined based on the first speed and the magnetic signal sensed by the Hall sensor and affected by the magnetic element. Thereafter, the rotating shaft is controlled to rotate at the target speed.

2. The system according to claim 1, wherein: The method further comprises: If the target rotation speed is less than the first rotation speed, the rotating shaft is controlled to rotate at the target rotation speed, and the model of the centrifuge rotor currently coupled to the rotating shaft is determined according to the target rotation speed and the magnetic signal sensed by the Hall sensor and affected by the magnetic element.

3. The system according to claim 2, characterized in that The centrifugation instruction carries a target duration of centrifugation set by the user; Afterwards, controlling the rotating shaft to rotate at the target speed includes: afterward, controlling the rotating shaft to rotate at the target speed for the target time period; If the target rotation speed is less than the first rotation speed, controlling the rotating shaft to rotate at the target rotation speed includes: if the target rotation speed is less than the first rotation speed, controlling the rotating shaft to rotate at the target rotation speed for the target time period.

4. The system according to claim 1, wherein: The first rotation speed is 1000 rpm-2000 rpm.

5. A centrifuge rotor identification method, characterized in that: Applied to the system according to any one of claims 1 to 4, the method comprises: receiving a centrifugation instruction, wherein the centrifugation instruction carries a target speed for centrifugation set by a user; determining whether the target speed is greater than a first speed; If the target speed is greater than the first speed, the rotating shaft is controlled to rotate at the first speed, and the model of the centrifuge rotor currently coupled to the rotating shaft is determined based on the first speed and the magnetic signal sensed by the Hall sensor and affected by the magnetic element. Thereafter, the rotating shaft is controlled to rotate at the target speed.

6. The method according to claim 5, characterized in that Also includes: If the target rotation speed is less than the first rotation speed, the rotating shaft is controlled to rotate at the target rotation speed, and the model of the centrifuge rotor currently coupled to the rotating shaft is determined according to the target rotation speed and the magnetic signal sensed by the Hall sensor and affected by the magnetic element.

7. The method according to claim 5, characterized in that The centrifugation instruction carries a target duration of centrifugation set by the user; Afterwards, controlling the rotating shaft to rotate at the target speed includes: afterward, controlling the rotating shaft to rotate at the target speed for the target time period; If the target rotation speed is less than the first rotation speed, controlling the rotating shaft to rotate at the target rotation speed includes: if the target rotation speed is less than the first rotation speed, controlling the rotating shaft to rotate at the target rotation speed for the target time period.

8. A centrifuge, characterized in that: Comprising a system as claimed in any one of claims 1 to 4.

9. A controller for a centrifuge, characterized in that: include: Memory, processor, and program instructions stored in the memory and executable by the processor; When the processor executes the program instructions, the method according to any one of claims 5 to 7 is implemented.

10. A computer-readable storage medium, characterized in that The method comprises program instructions, which, when executed on a centrifuge, cause the centrifuge to perform the method according to any one of claims 5 to 7.

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