Medical centrifuge temperature, rotating speed and noise calibration system

Abstract

The utility model relates to the technical field of device calibration, in particular to a temperature, rotating speed and noise calibration system for a medical centrifugal machine, which is characterized in that a temperature and rotating speed calibration unit and a noise calibrator are in wireless communication connection through a control device, and the temperature, the rotating speed and the noise of the centrifugal machine can be detected at the same time; a first circuit board and a magnet are arranged in a first shell, a temperature probe is arranged in a centrifugal tube, the centrifugal tube of a main machine is rotationally fixed in an inner hole of a rotor of the centrifugal machine, and the temperature probe can accurately measure the temperature of the centrifugal machine along with rotation of the rotor; the magnet is adjacent to the Hall device, the Hall device obtains the magnetic field generated by the magnet, and the rotating speed of the rotor can be accurately calculated. The noise calibrator is arranged on the side edge of the centrifugal machine in a preset and external mode, the noise calibrator is in wireless communication connection with the control device, the temperature, the rotating speed and the noise of the centrifugal machine can be accurately measured at the same time, the use reliability and accuracy of the medical centrifugal machine are guaranteed, and the calibration efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment calibration technology, and in particular to a medical centrifuge temperature, speed and noise calibration system. Background Technology

[0002] A centrifuge utilizes the powerful centrifugal force generated by the high-speed rotation of its rotor to force particles in a liquid to overcome diffusion and accelerate sedimentation, separating substances with different sedimentation coefficients and buoyant densities from a sample. Low-speed centrifuges have a simple structure, consisting of a motor, centrifugal rotor, speed controller, timer, centrifuge sleeve, and base. High-speed (refrigerated) and ultra-high-speed (refrigerated) centrifuges typically consist of a rotation device, speed control system, temperature control system, vacuum system, centrifuge chamber, centrifugal rotor, and safety protection devices. They utilize the centrifugal force of rotation and differences in sedimentation coefficients or buoyant densities to separate, concentrate, and purify biological samples. Their operating principles include centrifugal filtration and centrifugal sedimentation. Medical laboratory centrifuges are mainly used in medical experiments, hospitals, pharmaceutical companies, biological research institutes, and fine chemical industries.

[0003] The calibration of medical low-temperature centrifuges currently faces the following problems:

[0004] (1) Medical low-temperature centrifuges rely on the inner wall for cooling and temperature control. The temperature control sensor is located at the bottom of the inner wall, the outer side of the bottom inner wall, and the center of the rotor bottom. The exact location of the temperature control sensor cannot be determined.

[0005] (2) In the non-rotating state, the inner wall temperature is low, generally set to 4℃, and the inner wall temperature can reach below -3℃. The temperature field is extremely unevenly distributed near and away from the inner wall.

[0006] (3) When the centrifuged blood sample is placed in the rotor, the temperature field gradually becomes uniform and stable under normal rotation speed, and the target temperature is reached. Since the models and capacities of centrifuges are different, the time to reach a uniform temperature field cannot be determined.

[0007] (4) Most medical low-temperature centrifuges cannot control the temperature when they are not rotating, and wired devices cannot measure the temperature when they are rotating.

[0008] (5) A wireless device is used to measure the temperature while the rotor is rotating. Due to size and shape issues, there is no space inside the horizontal rotor when it is rotating. It needs to be placed inside the rotor for synchronous temperature measurement. Utility Model Content

[0009] This utility model discloses a medical centrifuge temperature, speed, and noise calibration system, which aims to solve the technical problems existing in the prior art.

[0010] The present invention adopts the following technical solution:

[0011] A medical centrifuge temperature, speed, and noise calibration system, installed to match the centrifuge, includes a temperature and speed calibration unit placed inside the centrifuge, a pre-installed external noise calibrator placed on the side of the centrifuge, and a control device that wirelessly communicates with both the temperature and speed calibration unit and the noise calibrator.

[0012] The temperature and speed calibration unit includes a main unit inserted into the centrifuge rotor and containing a temperature probe, and a Hall effect device placed next to the rotor. The main unit includes a first housing and a centrifuge tube that are connected as one unit. The first housing contains a first circuit board and a magnet. The centrifuge tube contains a temperature probe that is electrically connected to the first circuit board. The centrifuge tube is matched and connected to the inner hole of the rotor. The magnet is fixed to the inner wall of the first housing and is adjacent to the Hall effect device.

[0013] In some embodiments, the first circuit board includes a temperature acquisition module electrically connected to the temperature probe, a microcontroller, a battery module, and a Bluetooth wireless communication module connected to the control device.

[0014] In some embodiments, the temperature probe includes a metal housing and a temperature sensing element located at the bottom of the inner cavity of the housing. The temperature sensing element is connected to the temperature acquisition module via a wire, and the metal housing is inserted into the inner cavity of the centrifuge tube.

[0015] In some embodiments, the centrifuge tube includes an inner cavity and grooves disposed on the outer wall of the centrifuge tube, wherein a plurality of grooves are arranged in parallel.

[0016] In some embodiments, one or more Hall devices are provided and placed around the rotor; the Hall device includes a second housing and a Hall sensor and a second circuit board placed inside the second housing, the second circuit board including a pulse counter, a microcontroller and a Bluetooth wireless communication module that is wirelessly connected to the control device.

[0017] In some embodiments, the noise calibrator includes a third housing containing a third circuit board and a microphone located on the upper end of the third housing and fitted with a windproof foam ball. The surface of the third housing is also provided with an LCD display screen and several buttons. The third circuit board includes a noise acquisition module, a battery module, a microcontroller, and a Bluetooth wireless communication module that is wirelessly connected to the control device. The noise acquisition module is electrically connected to the microphone.

[0018] In some embodiments, the horizontal distance S between the noise calibrator and the centrifuge ranges from 0.6m to 1.2m, and the height is flush with the rotor.

[0019] In some embodiments, the horizontal distance S between the noise calibrator and the centrifuge is set to 1m.

[0020] In some embodiments, the first housing includes an upper housing and a lower housing made of PEEK material, and the thickness of the upper housing and the lower housing, as well as the thickness of the centrifuge tube made of polytetrafluoroethylene, are all provided to be 1.8 mm to 2.2 mm. Beneficial effects

[0021] This utility model discloses a calibration system for temperature, speed, and noise of a medical centrifuge. Compared with the prior art, this utility model has the following advantages:

[0022] A medical centrifuge temperature, speed, and noise calibration system is disclosed. By setting up temperature and speed calibration units and a noise calibrator, all wirelessly connected to a control device, it can simultaneously detect the temperature, speed, and noise of a centrifuge. The system features a first circuit board and a magnet within the first housing of the main unit, with a temperature probe electrically connected to the first circuit board inside the centrifuge tube. The centrifuge tube is fixedly inserted into the inner hole of the centrifuge rotor. As the rotor rotates, the temperature probe accurately measures the centrifuge temperature. The magnet is fixedly attached to the inner wall of the first housing, adjacent to a Hall effect sensor. The Hall effect sensor acquires the magnetic field generated by the magnet, enabling accurate calculation of the rotor speed. The noise calibrator is placed externally on the side of the centrifuge and wirelessly connected to the control device. This system allows for the simultaneous and accurate measurement of the centrifuge's temperature, speed, and noise, providing integrated detection of the centrifuge's temperature control performance, speed, and noise intensity. This ensures biosafety, effectively evaluates the performance and accuracy of the medical centrifuge, guarantees the reliability and accuracy of its use, and improves calibration efficiency. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below, constituting a part of this utility model. The illustrative embodiments of this utility model and their descriptions explain this utility model and do not constitute an improper limitation of this utility model; in the drawings:

[0024] Figure 1 This is a schematic diagram of the technical solution of the medical centrifuge temperature, speed, and noise calibration system disclosed in an embodiment of this utility model;

[0025] Figure 2 A schematic diagram of the host's technical solution structure;

[0026] Figure 3 This is a schematic diagram of the technical structure of the Hall effect device;

[0027] Figure 4 A schematic diagram of the technical solution structure for a noise calibrator;

[0028] Figure 5 This is a block diagram of the first circuit board;

[0029] Figure 6 This is a block diagram of the second circuit board;

[0030] Figure 7 This is the block diagram of the second circuit board.

[0031] In the picture:

[0032] Temperature and speed calibration unit 1; Main unit 11; First housing 111; Upper housing 1111; Lower housing 1112; Threaded connection end 1113; First cavity 1114; First circuit board 112; Temperature acquisition module 1121; ADC module 1122; Battery module 1123; Microcontroller 1124; Storage module 1125; Bluetooth wireless communication module 1126; Magnet 113; Temperature probe 114; Outer shell 1141; Temperature sensing element 1142; Wire 115; Centrifuge tube 116; Centrifuge tube inner cavity 1161; Groove 1162; O-ring 1 163; Centrifuge tube body 1164; Hall effect device 12; Second housing 121; Second inner cavity 1211; Hall sensor 122; Second circuit board 123; Pulse counter 1231; Battery module 1232; Storage module 1125; Charging port 1212; Noise calibrator 2; Third housing 21; Third inner cavity 211; Third circuit board 22; Noise acquisition module 221; Windproof sponge ball 22; LCD display 23; Microphone 24; Button 25; Tablet PC 3; Touch screen 31; Centrifuge 4; Rotor 41; Inner hole 411; Inner plane 42. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. In the description of this utility model, it should be noted that the term "comprising" mentioned in the specification and claims is an open-ended term and should therefore be interpreted as "including but not limited to".

[0034] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments; based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0036] like Figures 1-7 As shown, the technical solution disclosed in this utility model is as follows:

[0037] A medical centrifuge temperature, speed, and noise calibration system, installed in conjunction with a centrifuge 4, includes a temperature and speed calibration unit 1 placed inside the centrifuge 4, a pre-installed external noise calibrator 2 placed on the side of the centrifuge 4, and a control device that is wirelessly connected to both the temperature and speed calibration unit 1 and the noise calibrator 2.

[0038] The temperature and speed calibration unit 1 includes a main unit 11 that is securely inserted into the centrifuge rotor 41 and contains a temperature probe 114, and a Hall effect device 12 placed next to the rotor 41. The main unit 11 includes a first housing 111 and a centrifuge tube 116 that are connected as one unit. The first housing 111 contains a first circuit board 112 and a magnet 113. The centrifuge tube 116 contains a temperature probe 114 that is electrically connected to the first circuit board 112. The centrifuge tube 116 is matched and fixedly connected to the inner hole of the rotor 41. The magnet 113 is fixedly attached to the inner wall of the first housing 111 and is adjacent to the Hall effect device 12.

[0039] like Figures 1-7 As shown, the preferred embodiment of this utility model is as follows:

[0040] A medical centrifuge temperature, speed, and noise calibration system is installed in conjunction with a centrifuge 4. It includes a temperature and speed calibration unit 1 placed inside the centrifuge 4, a pre-installed external noise calibrator 2 placed on the side of the centrifuge 4, and a control device that wirelessly communicates with both the temperature and speed calibration unit 1 and the noise calibrator 2. In this embodiment, the control device is a tablet computer 3. Figure 1 As shown.

[0041] The temperature and speed calibration unit 1 includes a main unit 11 and a Hall effect device 12, such as Figure 1 As shown.

[0042] The host 11 includes a first housing 111 and a centrifuge tube 116 connected as one unit; the first housing 111 contains a first circuit board 112 and a magnet 113, and the magnet 113 is fixedly attached to the inner wall of the first housing 111.

[0043] The first housing 111 includes an upper housing 1111 and a lower housing 1112 connected by a threaded connection end 1113. Both the upper housing 1111 and the lower housing 1112 are made of PEEK material, and a first cavity 1114 is provided inside the housing. The thickness of the upper housing 1111 and the lower housing 1112 ranges from 1.8mm to 2.2mm, with 2mm being the optimal thickness, which is not easily conductive and is sturdy.

[0044] The centrifuge tube 116 includes a centrifuge tube body 1164 made of polytetrafluoroethylene, with an inner cavity 1161 inside and a blind end at the lower end. The centrifuge tube body 1164 has a groove 1162 on the outside, and several grooves 1162 are arranged in parallel. In this embodiment, three grooves 1162 are selected. An O-ring 1163 is fitted on the groove 1162. Through the O-ring 1163, the centrifuge tube 116 is inserted and sealed in the inner hole 411 of the rotor 41 of the centrifuge 4.

[0045] A temperature probe 114 is installed inside the centrifuge tube cavity 1161. The temperature probe 114 includes a metal shell 1141 and a temperature sensing element 1142 located at the bottom of the cavity of the shell 1141. The temperature sensing element 1142 is connected to the temperature acquisition module 1121 provided on the first circuit board 112 via a wire 115. In this embodiment, a platinum resistance thermometer is selected as the temperature sensing element 1142. The metal shell 1141 is inserted into the centrifuge tube cavity 1161 provided in the centrifuge tube 116. Figure 2 As shown.

[0046] The first circuit board 112 includes a temperature acquisition module 1121 for acquiring temperature values ​​collected by a temperature sensing element 1142, an ADC module 1122 for analog-to-digital conversion of the acquired data, a microcontroller 1124 for controlling data acquisition, a storage module 1125 for offline data storage, a Bluetooth wireless communication module 1126 for real-time wireless communication with the tablet computer 3, and a battery module 1123 for power supply. The battery module 1123 includes a battery and a battery compartment, with a 1632 button battery (not shown in the figure) placed inside the battery compartment. Figure 5 As shown.

[0047] The centrifuge 4 has a rotor 41 at its center, and the rotor 41 has an inner hole 411 that matches and connects with the centrifuge tube 116. The bottom of the centrifuge 4 has an inner plane 42, and the Hall device 12 is placed on the inner plane 42. One or more can be set as required and placed around the rotor 41.

[0048] The Hall effect device 12 includes a second housing 121 made of PEEK material, a Hall sensor 122 placed in a second inner cavity 1211 of the second housing 121, and a second circuit board 123. The second circuit board 123 includes a pulse counter 1231 connected to the Hall sensor 122, a storage module 1125 for offline data storage, a microcontroller 1124 for controlling data acquisition and calculation, a battery module 1232 for battery charging, and a Bluetooth wireless communication module 1126 for wireless communication with the tablet computer 3. The second housing 121 consists of an upper housing and a lower housing connected by threads, and a charging port 1212 is provided on the second housing 121. Figure 3 , Figure 6 As shown.

[0049] The working principle is as follows: When the centrifuge tube 116 rotates with the rotor 41, the magnet 113 located in the first housing 111 rotates with the rotor 41. When the magnet 113 rotates, the magnetic field also changes. At this time, the Hall sensor 122 placed near the magnet 113 captures the change in the magnetic field in real time. As the frequency of the magnet 113 rotation increases, the Hall sensor 122 generates more and more voltage pulses. Since the frequency of this pulse is proportional to the rotation speed, the rotation speed of the device can be calculated by measuring the frequency of the voltage pulses output by the Hall sensor 122.

[0050] The horizontal distance S between the noise calibrator 2 and the centrifuge 4 ranges from 0.6m to 1.2m, and its height is flush with that of the rotor 41. In this embodiment, S is preferably 1m. Figure 1 As shown.

[0051] The noise calibrator 2 includes a third housing 21 containing a third circuit board 22 in a third inner cavity 211 and a microphone 24 located on the upper end of the third housing 21 and fitted with a windproof sponge ball 22. As the centrifuge 4 rotates, it will generate noise, and the higher the rotation speed, the higher the noise level will be. The noise calibrator 2 obtains the noise value through the microphone 24 and transmits it to the noise acquisition module 221 on the third circuit board 22.

[0052] The third circuit board 22 includes a noise acquisition module 221 connected to the microphone 24 via a wire 115, a microcontroller 1124 for controlling noise acquisition, a storage module 1125 for offline data storage, a Bluetooth wireless communication module 1126 for wireless communication with the tablet computer 3, and a battery module 1123 for power supply. The battery module 1123 includes a battery and a battery compartment, and a 1632 button battery (not shown in the figure) is placed inside the battery compartment.

[0053] The surface of the third housing 21, made of polycarbonate plastic, is also provided with an LCD display screen 23 and buttons 25. The LCD display screen 23 can display the measured noise value in real time. The noise calibrator 2 can be wirelessly controlled by the tablet computer 3 to start the acquisition, or the power on and off and start / stop acquisition can be controlled by the buttons 25. After the power is turned on, the LCD display screen 23 will automatically light up.

[0054] The tablet computer 3 is equipped with a touch screen 31, which is an LCD touch screen.

[0055] The temperature and speed calibration unit 1 and the noise calibrator 2 are both connected to the tablet computer 3 via a Bluetooth wireless communication module 1126. The tablet computer 3 is equipped with a dedicated software system. Through the LCD touch screen 31, it is possible to set the simultaneous calibration of temperature, speed, and noise, and to set the sampling frequency, which can be set from 1s to 180s. Both the temperature and speed calibration unit 1 and the noise calibrator 2 can store data offline. After calibration, the software can read all the temperature, speed, and noise data in the calibrator, automatically plot curves, and generate all the raw data, which can be exported as Excel raw data. It can also control one or more calibrators. The software is equipped with an automatic calculation algorithm that can process and calculate the centrifuge data according to the calibration specifications, reducing the error of human calculation and improving calibration efficiency.

[0056] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of the present invention.

Claims

1. A medical centrifuge temperature, speed, noise calibration system for installation with a centrifuge, characterized by: The temperature and rotation speed calibration unit is placed in the centrifuge, the noise calibrator is placed outside the centrifuge, and the control device is wirelessly connected to the temperature and rotation speed calibration unit and the noise calibrator simultaneously. The temperature and rotation speed calibration unit includes a main machine with a temperature probe inserted into the rotor of the centrifuge and a Hall device placed beside the rotor.

2. The medical centrifuge temperature, speed, noise calibration system of claim 1, wherein: The first circuit board includes a temperature acquisition module, a single-chip microcomputer, a battery module, and a Bluetooth wireless communication module connected to the control device.

3. The medical centrifuge temperature, speed, noise calibration system of claim 2, wherein: The temperature probe includes a metal shell and a temperature sensing element at the bottom of the inner cavity of the shell.

4. The medical centrifuge temperature, speed, noise calibration system of claim 3, wherein: The centrifuge tube includes a centrifuge tube inner cavity and a groove outside the outer wall of the centrifuge tube.

5. The medical centrifuge temperature, speed, noise calibration system of claim 1, wherein: The Hall device is placed around the rotor and includes a second housing, a Hall sensor, and a second circuit board.

6. The medical centrifuge temperature, speed, noise calibration system of claim 1, wherein: The noise calibrator includes a third housing with a third circuit board and a microphone with a windproof sponge ball on the upper end of the third housing.

7. The medical centrifuge temperature, speed, noise calibration system of claim 6, wherein: The noise calibrator and the centrifuge have a horizontal distance S ranging from 0.6m to 1.2m.

8. The medical centrifuge temperature, speed, noise calibration system of claim 7, wherein: The noise calibrator and the centrifuge have a horizontal distance S of 1m.

9. The medical centrifuge temperature, speed, noise calibration system of claim 1, wherein: The first housing includes an upper shell and a lower shell made of PEEK material, and the thickness of the upper shell, the lower shell, and the centrifuge tube made of polytetrafluoroethylene is 1.8mm to 2.2mm.

Images