Magnetic suspension quality automatic detection and compensation system

Abstract

The invention relates to the technical field of magnetic suspension quality detection, and discloses a magnetic suspension quality automatic detection and compensation system, which comprises an industrial camera, a sensor, a data acquisition module, an output processing module, a feedback adjustment module, a compensation pump and an execution unit, the execution unit is used for supplying power to the electromagnet and generating a magnetic field to intervene in the magnetic suspension according to the output of the output processing module; the electromagnets specifically comprise the first electromagnet, the second electromagnet, the third electromagnet and the fourth electromagnet. By detecting the chromaticity data, the light transmittance data and the dispersion data of the particles in the magnetic suspension, the flowing property of the magnetic suspension can be accurately and efficiently judged, and whether the magnetic suspension needs to be heated or not is determined according to the flowing property of the magnetic suspension, so that the flowing property of the magnetic suspension is ensured; in this way, it can be guaranteed that the medical equipment can work with the highest performance all the time.

Description

Technical Field

[0001] The present invention relates to the technical field of magnetic suspension liquid quality detection, and particularly to an automatic detection and compensation system for magnetic suspension liquid quality. Background Art

[0002] A suspension liquid formed by mixing magnetic powder and a medium liquid in a certain proportion is mainly applied to medical diagnostic equipment and other detection and exploration equipment. When the fluidity of the magnetic suspension liquid is insufficient, it will affect the diagnostic performance of medical equipment and the detection performance of detection equipment.

[0003] A prior patent discloses an automatic detection method and system for magnetic suspension liquid concentration (publication number CN116908280A), which relates to the field of machine vision. The method includes putting a 100 ml sample of the magnetic suspension liquid to be tested into a magnetic powder concentration measuring tube and precipitating for more than thirty minutes; after precipitation, using an industrial camera to take an image of the magnetic suspension liquid after the magnetic powder particles precipitate; using an image processing algorithm to first determine the number of scale lines below the interface of the precipitated magnetic powder in the measuring tube. In the technology disclosed in this patent, there is a lack of more refined judgment on the magnetic particles with good fluidity and poor fluidity in the magnetic suspension liquid, which makes it more uncertain every time the magnetic suspension liquid is replenished in high-precision and high-performance equipment. Summary of the Invention

[0004] The main technical problem to be solved by the present invention is to provide an automatic detection and compensation system for magnetic suspension liquid quality, which solves the problems in the above background art.

[0005] To solve the above technical problem, according to one aspect of the present invention, more specifically, it is an automatic detection and compensation system for magnetic suspension liquid quality, including an industrial camera, a sensor, a data acquisition module, an output processing module, a feedback adjustment module, a compensation pump, and an execution unit;

[0006] The execution unit is used to supply power to the electromagnet according to the output of the output processing module and generate a magnetic field to intervene in the magnetic suspension liquid; the electromagnet specifically includes electromagnet one, electromagnet two, electromagnet three, and electromagnet four;

[0007] The data acquisition module is used to collect the chromaticity data, transmittance data, and dispersion data of the magnetic suspension liquid photographed by the industrial camera under the action of the magnetic field, and also collect the real-time concentration, real-time temperature, and real-time conductivity of the magnetic suspension liquid through the sensor;

[0008] The output processing module is used to send a heating instruction to the execution unit and a working instruction to the compensation pump according to the feedback of the data acquisition module and the output processing module;

[0009] The compensation pump is used to receive the working instruction of the output processing module and pump new magnetic suspension liquid into the magnetic suspension liquid container.

[0010] Further, the sensor specifically includes: a particle concentration sensor, a temperature sensor, and a conductivity sensor;

[0011] The particle concentration sensor is used to detect the real-time concentration of magnetic particles in the magnetic suspension;

[0012] The temperature sensor is used to detect the real-time temperature of the magnetic suspension;

[0013] The conductivity sensor is used to detect the real-time conductivity of the magnetic suspension.

[0014] Further, the industrial camera is used to capture the chromaticity, light transmittance, and dispersion degree of the magnetic suspension under the action of the magnetic field generated by the electromagnet.

[0015] Further, the output processing module determines whether to send a heating instruction to the execution unit according to the distribution aggregation index of the magnetic suspension under the action of the magnetic field generated by one electromagnet, two electromagnets, and four electromagnets, as follows:

[0016]

[0017] In the formula, H represents the flow coefficient of the magnetic suspension, m1 represents the distribution aggregation index of the magnetic suspension under the intervention of the magnetic field generated by one electromagnet, m2 represents the distribution aggregation index of the magnetic suspension under the intervention of the magnetic field generated by two electromagnets, and m3 represents the distribution aggregation index of the magnetic suspension under the intervention of the magnetic field generated by three electromagnets;

[0018] When H < 69%, it indicates that the fluidity of the magnetic suspension is poor, and at this time, the output processing module needs to send a heating instruction to the execution unit;

[0019] When H ≥ 69%, it indicates that the fluidity of the magnetic suspension meets the requirements, and at this time, the output processing module does not need to send a heating instruction to the execution unit.

[0020] Further, the output processing module determines the distribution aggregation index of the magnetic suspension under the intervention of the magnetic field according to the maximum color difference of the color of the magnetic suspension, the maximum light transmittance of the magnetic suspension, and the dispersion degree of the particle distribution in the magnetic suspension under the action of the magnetic field generated by the electromagnet, as follows:

[0021]

[0022] In the formula, m represents the distribution aggregation index of the magnetic suspension under the intervention of the magnetic field, a represents the maximum color difference of the magnetic suspension shooting information, u represents the maximum light transmittance of the magnetic suspension, and s represents the dispersion degree of the particle distribution of the magnetic suspension shooting.

[0023] Further, the output processing module determines whether to send a working instruction to the compensation pump according to the particle concentration, temperature, and conductivity of the magnetic suspension collected by the data acquisition module, as follows:

[0024]

[0025] In the formula, D represents the index coefficient for the output processing module to send a working instruction to the compensation pump, c represents the particle concentration of the magnetic suspension detected by the particle concentration sensor, T represents the current temperature of the magnetic suspension detected by the temperature sensor, and k represents the conductivity of the magnetic suspension detected by the conductivity sensor.

[0026] Further, when D < 57%, it means that the quality of the magnetic suspension is lower than the actual requirement. At this time, a working instruction needs to be sent to the compensation pump to compensate the magnetic suspension;

[0027] When D ≥ 57%, it means that the quality of the magnetic suspension meets the actual requirement. At this time, there is no need to send a working instruction to the compensation pump to compensate the magnetic suspension.

[0028] Further, the sensor needs to collect the particle concentration, temperature, and conductivity of the magnetic suspension when electromagnets one, two, three, and four all generate magnetic fields and intervene in the magnetic suspension.

[0029] Further, the feedback adjustment module is used to receive the output amounts of the execution unit and the compensation pump, and feedback the received output amounts to the output processing module.

[0030] Further, electromagnets one, two, three, and four are all used to generate magnetic fields in the magnetic suspension.

[0031] Beneficial effects:

[0032] 1. By detecting the chromaticity data, transmittance data, and dispersion data of the particles in the magnetic suspension, the present invention can accurately and efficiently judge the flow performance of the magnetic suspension, and determine whether to heat the magnetic suspension based on the flow performance of the magnetic suspension, so as to ensure the fluidity of the magnetic suspension, thereby ensuring that the medical device can always work at the highest performance.

[0033] 2. By generating magnetic fields through electromagnets one, two, three, and four to intervene in the magnetic suspension, the present invention can more efficiently distinguish the particles with good fluidity and poor fluidity in the magnetic suspension under the intervention of the magnetic fields generated by the electromagnets, which can improve the analysis and judgment accuracy of the output processing module.

[0034] 3. The present invention determines whether to send a working instruction to the compensation pump based on the particle concentration, temperature, and conductivity of the magnetic suspension collected by the data acquisition module. After receiving the working instruction, the compensation pump pumps new magnetic suspension into the magnetic suspension container to ensure the quality of the magnetic suspension. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a flowchart of the present invention;

[0036] Figure 2 is a schematic diagram of the magnetic suspension in the present invention under the intervention of a magnetic field generated by an electromagnet;

[0037] Figure 3 is a schematic diagram of the magnetic suspension in the present invention under the intervention of magnetic fields generated by two electromagnets;

[0038] Figure 4 is a schematic diagram of the magnetic suspension in the present invention under the intervention of magnetic fields generated by four electromagnets. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] To make the technical solution of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] Embodiment 1

[0041] As Figures 1-4 shown, according to one aspect of the present invention, an automatic detection and compensation system for the quality of magnetic suspension is provided, including an industrial camera, a sensor, a data acquisition module, an output processing module, a feedback adjustment module, a compensation pump, and an execution unit; the execution unit is used to supply power to the electromagnet according to the output of the output processing module and generate a magnetic field to intervene in the magnetic suspension; the electromagnet specifically includes electromagnet one, electromagnet two, electromagnet three, and electromagnet four; the data acquisition module is used to collect the chromaticity data, transmittance data, and dispersion data of the magnetic suspension under the action of the magnetic field captured by the industrial camera, and also collect the real-time concentration, real-time temperature, and real-time conductivity of the magnetic suspension through the sensor; the output processing module is used to send a heating instruction to the execution unit and a working instruction to the compensation pump according to the feedback of the data acquisition module and the output processing module; the compensation pump is used to receive the working instruction of the output processing module and pump new magnetic suspension into the magnetic suspension container. By detecting the chromaticity data, transmittance data, and dispersion data of the particles in the magnetic suspension, the flow performance of the magnetic suspension can be accurately and efficiently judged, and whether the magnetic suspension needs to be heated is determined based on the flow performance of the magnetic suspension to ensure the fluidity of the magnetic suspension, so as to ensure that the medical device can always work at the highest performance.

[0042] In this embodiment, the sensors specifically include: a particle concentration sensor, a temperature sensor, and a conductivity sensor. The particle concentration sensor is used to detect the real-time concentration of magnetic particles in the magnetic suspension. The temperature sensor is used to detect the real-time temperature of the magnetic suspension. The conductivity sensor is used to detect the real-time conductivity of the magnetic suspension. An industrial camera is used to capture the chromaticity, transmittance, and dispersion of the magnetic suspension under the action of the magnetic field generated by the electromagnets. The sensors need to collect the particle concentration, temperature, and conductivity of the magnetic suspension when the electromagnet 1, electromagnet 2, electromagnet 3, and electromagnet 4 all generate magnetic fields and intervene in the magnetic suspension. The feedback adjustment module is used to receive the output quantities of the execution unit and the compensation pump, and feedback the received output quantities to the output processing module. The electromagnet 1, electromagnet 2, electromagnet 3, and electromagnet 4 are all used to generate magnetic fields in the magnetic suspension. By generating magnetic fields through the electromagnet 1, electromagnet 2, electromagnet 3, and electromagnet 4 to intervene in the magnetic suspension, under the intervention of the magnetic field generated by the electromagnets, it is possible to more efficiently distinguish the particles with good fluidity and poor fluidity in the magnetic suspension, which can improve the accuracy of the analysis and judgment of the output processing module.

[0043] Embodiment 2

[0044] The output processing module determines whether to send a heating instruction to the execution unit according to the distribution aggregation index of the magnetic suspension under the action of the magnetic fields generated by one electromagnet, two electromagnets, and four electromagnets, as follows:

[0045]

[0046] In the formula, H represents the flow coefficient of the magnetic suspension, m1 represents the distribution aggregation index of the magnetic suspension under the intervention of the magnetic field generated by one electromagnet, m2 represents the distribution aggregation index of the magnetic suspension under the intervention of the magnetic field generated by two electromagnets, and m3 represents the distribution aggregation index of the magnetic suspension under the intervention of the magnetic field generated by three electromagnets.

[0047] The output processing module determines the distribution aggregation index of the magnetic suspension under the intervention of the magnetic field according to the maximum color difference of the color of the magnetic suspension, the maximum transmittance of the magnetic suspension, and the dispersion degree of the particle distribution in the magnetic suspension under the action of the magnetic field generated by the electromagnet, as follows:

[0048]

[0049] In the formula, m represents the distribution aggregation index of the magnetic suspension under the intervention of the magnetic field, a represents the maximum color difference of the magnetic suspension shooting information, u represents the maximum transmittance of the magnetic suspension, and s represents the dispersion degree of the captured particle distribution. Among them, the calculation method of the dispersion degree is:

[0050] 1). Capture the coordinate positions (x1, y1), (x2, y2),..., (x n , yn )。

[0051] 2), Calculate the mean values of the x - coordinates and y - coordinates of the particles in the magnetic suspension fluid.

[0052]

[0053] Where n is the number of particles in the magnetic suspension fluid, x i and y i are the x - coordinate and y - coordinate of each particle in the magnetic suspension fluid respectively.

[0054] 3), Calculate the dispersions of the particles in the magnetic suspension fluid in the x - coordinate and y - coordinate directions.

[0055]

[0056] Then, the dispersion of the particles in the magnetic suspension fluid is:

[0057]

[0058] When H < 69%, it indicates that the fluidity of the magnetic suspension fluid is poor. At this time, the output processing module needs to send a heating instruction to the execution unit;

[0059] When H ≥ 69%, it indicates that the fluidity of the magnetic suspension fluid meets the requirements. At this time, the output processing module does not need to send a heating instruction to the execution unit.

[0060] As Figure 2 shown, under the intervention of the magnetic field generated by the electromagnet - 1, the maximum color difference of the magnetic suspension fluid photographed by the industrial camera is a = 6.2 (unit: ΔE, the color difference represents the difference between two colors, and the larger the value, the more significant the color difference).

[0061] Under the intervention of the magnetic field generated by the electromagnet - 1, the maximum light transmittance of the magnetic suspension fluid is u = 76% (light transmittance = (intensity of light passing through the magnetic suspension fluid ÷ intensity of incident light on the magnetic suspension fluid) × 100%).

[0062] Under the intervention of the magnetic field generated by the electromagnet - 1, the dispersion degree of the particle distribution in the magnetic suspension fluid is s = 7. Then there is:

[0063]

[0064] As Figure 3 shown, under the intervention of the magnetic field generated by the electromagnet - 1, the maximum color difference of the magnetic suspension fluid photographed by the industrial camera is a = 4.5. The maximum light transmittance of the magnetic suspension fluid is u = 61%. The dispersion degree of the particle distribution in the magnetic suspension fluid is s = 9. Then there is:

[0065]

[0066] As Figure 4As shown, under the intervention of the magnetic field generated by an electromagnet, the maximum color difference of the magnetic suspension liquid captured by the industrial camera is a = 3.7. The maximum light transmittance of the magnetic suspension liquid is u = 43%. The degree of dispersion of the particle distribution of the magnetic suspension liquid is s = 13. Then there is:

[0067]

[0068] Then, the flow coefficient of the magnetic suspension liquid is:

[0069]

[0070] It can be known from the above calculations that the flow coefficient of the magnetic suspension liquid is H = 71.4%, that is, the fluidity of the magnetic suspension liquid meets the requirements. At this time, the output processing module does not need to send a heating instruction to the execution unit. And multiple groups of data are collected, and there are:

[0071]

[0072] It can be known from the above table data that when the sample data tends to infinity, the magnetic suspension liquid will show an obvious boundary line according to the flow coefficient, and this boundary line is 69%. When H < 69%, it means that the fluidity of the magnetic suspension liquid is poor, and at this time the output processing module needs to send a heating instruction to the execution unit; when H ≥ 69%, it means that the fluidity of the magnetic suspension liquid meets the requirements, and at this time the output processing module does not need to send a heating instruction to the execution unit.

[0073] Example 3

[0074] The output processing module determines whether to send a working instruction to the compensation pump according to the particle concentration, temperature, and conductivity of the magnetic suspension liquid collected by the data acquisition module, and there is:

[0075]

[0076] In the formula, D represents the index coefficient for the output processing module to send a working instruction to the compensation pump, c represents the particle concentration of the magnetic suspension liquid detected by the particle concentration sensor, T represents the current temperature of the magnetic suspension liquid detected by the temperature sensor, and k represents the conductivity of the magnetic suspension liquid detected by the conductivity sensor.

[0077] When D < 57%, it means that the quality of the magnetic suspension liquid is lower than the actual demand, and at this time a working instruction needs to be sent to the compensation pump to compensate the magnetic suspension liquid;

[0078] When D ≥ 57%, it means that the quality of the magnetic suspension liquid meets the actual demand, and at this time there is no need to send a working instruction to the compensation pump to compensate the magnetic suspension liquid.

[0079] Among them, the sensor detects the particle concentration, temperature, and conductivity of the magnetic suspension liquid. The particle concentration of the magnetic suspension liquid detected by the particle concentration sensor is taken as c = 15% (particle concentration = (volume of magnetic particles ÷ volume of liquid) × 100%). The current temperature of the magnetic suspension liquid detected by the temperature sensor is taken as T = 21 (°C). The conductivity of the magnetic suspension liquid detected by the conductivity sensor is taken as k = 8 (unit: s / m, conductivity = conductivity constant of the magnetic suspension liquid × concentration of particles in the magnetic suspension liquid). Then there is:

[0080]

[0081] It can be known from the above calculations that the index coefficient for the output processing module to send a working instruction to the compensation pump is D = 60.5%. The quality of the magnetic suspension liquid meets the actual requirements, and at this time, there is no need to send a working instruction to the compensation pump to compensate the magnetic suspension liquid. Through multiple groups of implementation data, there is:

[0082]

[0083]

[0084] It can be known from the above table data that when the sample data tends to infinity, there will be an obvious dividing line for the magnetic suspension liquid according to whether it meets the actual requirements. When D < 57%, it means that the quality of the magnetic suspension liquid is lower than the actual requirements, and at this time, a working instruction needs to be sent to the compensation pump to compensate the magnetic suspension liquid; when D ≥ 57%, it means that the quality of the magnetic suspension liquid meets the actual requirements, and at this time, there is no need to send a working instruction to the compensation pump to compensate the magnetic suspension liquid.

[0085] The above-described embodiments merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the appended claims.

Claims

1. A magnetic suspension quality automatic detection and compensation system, characterized in that: It includes industrial camera, sensor, data acquisition module, output processing module, feedback adjustment module, compensation pump and execution unit; The execution unit is used to supply power to the electromagnet according to the output of the output processing module so as to generate a magnetic field to intervene in the magnetic suspension; the electromagnet specifically includes electromagnet 1, electromagnet 2, electromagnet 3 and electromagnet 4; The data acquisition module is used to collect the color data, transmittance data and discreteness data of the magnetic suspension under the action of the magnetic field photographed by the industrial camera, and also collects the concentration, temperature and conductivity of the magnetic suspension through the sensor; The output processing module is used to send a heating instruction to the execution unit and a working instruction to the compensation pump according to the feedback from the data acquisition module and the output processing module; The compensation pump is used to receive the working instruction of the output processing module to pump new magnetic suspension into the magnetic suspension container.

2. The magnetic suspension quality automatic detection and compensation system according to claim 1, characterized in that: The sensors specifically include: a particle concentration sensor, a temperature sensor, and a conductivity sensor.

3. The magnetic suspension quality automatic detection and compensation system according to claim 1, characterized in that: The industrial camera is used to photograph the chromaticity, light transmittance and dispersion of the magnetic suspension under the action of the magnetic field generated by the electromagnet.

4. The magnetic suspension quality automatic detection and compensation system according to claim 1, characterized in that: The output processing module determines whether it is necessary to send a heating instruction to the execution unit according to the distribution aggregation index of the magnetic suspension under the magnetic field generated by one electromagnet, two electromagnets, and four electromagnets: Wherein, H represents the flow coefficient of the magnetic suspension, m1 represents the distribution aggregation index of the magnetic suspension under the intervention of the magnetic field generated by one electromagnet, m2 represents the distribution aggregation index of the magnetic suspension under the intervention of the magnetic field generated by two electromagnets, and m3 represents the distribution aggregation index of the magnetic suspension under the intervention of the magnetic field generated by three electromagnets; When H is less than 69%, it indicates that the fluidity of the magnetic suspension is poor, and the output processing module needs to send a heating instruction to the execution unit; When H≥69%, it means that the fluidity of the magnetic suspension meets the requirements, and at this time, the output processing module does not need to send a heating instruction to the execution unit.

5. The magnetic suspension quality automatic detection and compensation system according to claim 4, characterized in that: The output processing module determines the distribution aggregation index of the magnetic suspension under the magnetic field according to the maximum color difference of the magnetic suspension, the maximum light transmittance of the magnetic suspension, and the discrete degree of the particle distribution in the magnetic suspension under the magnetic field generated by the electromagnet, which is: Wherein, m represents the distribution aggregation index of the magnetic suspension under the intervention of the magnetic field, a represents the maximum color difference of the magnetic suspension shooting information, u represents the maximum transmittance of the magnetic suspension, and s represents the discrete degree of the distribution of the magnetic suspension particles.

6. The magnetic suspension quality automatic detection and compensation system according to claim 1, characterized in that: The output processing module determines whether to send a working instruction to the compensation pump according to the magnetic suspension particle concentration, temperature and conductivity collected by the data acquisition module, including: Wherein, D represents the index coefficient of the output processing module sending the working instruction to the compensation pump, c represents the particle concentration of the magnetic suspension detected by the particle concentration sensor, T represents the current temperature of the magnetic suspension detected by the temperature sensor, and k represents the conductivity of the magnetic suspension detected by the conductivity sensor.

7. The magnetic suspension quality automatic detection and compensation system according to claim 1, characterized in that: When D is less than 57%, it means that the quality of the magnetic suspension is lower than the actual demand. At this time, it is necessary to send a work instruction to the compensation pump to compensate the magnetic suspension; When D ≥ 57%, it means that the quality of the magnetic suspension meets the actual demand, and at this time, there is no need to send a work instruction to the compensation pump to compensate the magnetic suspension.

8. The magnetic suspension quality automatic detection and compensation system according to claim 1, characterized in that: The sensor needs to collect the particle concentration, temperature and conductivity of the magnetic suspension when the electromagnet 1, the electromagnet 2, the electromagnet 3 and the electromagnet 4 all generate magnetic fields and intervene in the magnetic suspension.

9. The magnetic suspension quality automatic detection and compensation system according to claim 1, characterized in that: The feedback adjustment module is used to receive the output of the execution unit and the compensation pump, and feed back the received output to the output processing module.

10. The magnetic suspension quality automatic detection and compensation system according to claim 1, characterized in that: The electromagnet one, electromagnet two, electromagnet three and electromagnet four are all used to generate a magnetic field in the magnetic suspension.

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