Real-time particle monitor
By designing a real-time particle monitor including an optical microscope and a cross polarizer, the problems of complex structure, high cost, unrecognizable metal particles and repeatability tests in the prior art are solved, and low-cost and efficient particle monitoring and analysis are achieved.
Patent Information
- Application Number
- CN202422129391.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-31
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-08-31
AI Technical Summary
The existing atmospheric particle sampling device for environmental monitoring has complex structure, high cost and cumbersome operation. It is impossible to identify metal particles, and it is impossible to capture ultra-poor particle samples for further analysis. It is also impossible to perform reproducibility tests through the particle samples captured by the dust-capturing carrier sheet.
A real-time particle monitor is designed, including a shell, host, optical microscope, light source and particle capture carrier sheet. It uses an optical microscope with a ten-megapixel high-precision camera and a light source with two angles cross polarizers. It can automatically identify reflective metal particles, and through the cooperation of the optical microscope and the light source, it can monitor and analyze particle changes in real time. Multiple monitors communicate with the central control computer through LAN to achieve efficient monitoring.
It realizes low-cost and efficient particle monitoring, can identify metal particles, capture ultra-poor particle samples for further analysis, and conducts repeatable reproducibility tests, simplifying the operation process and improving sampling efficiency.
Smart Images
Figure CN223065089U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of particle monitors, and more specifically, to a real-time particle monitor. Background Art
[0002] Environmental monitoring refers to the activity of environmental monitoring agencies monitoring and measuring the environmental quality status. Environmental monitoring is to monitor and measure the indicators reflecting environmental quality to determine the pollution status and the level of environmental quality of the environment. The content of environmental monitoring mainly includes the monitoring of physical indicators, chemical indicators, and ecological systems.
[0003] An atmospheric particle sampler is one of the commonly used instruments for environmental monitoring, and is a device for directly and real-time measuring the concentration of particles with a diameter less than 10um and the mass concentration of other particles in the indoor environment; generally composed of an instrument main body, a cutter, and a sampling system. The instrument main body panel has a display screen and buttons. The cutter is designed according to the aerodynamic principle and is used to separate particles of different diameters (PM2.5 and PM10); the sampling system mainly consists of a sampling pipeline, a dynamic heating system (DHS), and an air pump; during sampling, first move the device to a predetermined position, then start the instrument, air is inhaled from the filter into the sampling tube, discharged after passing through the filter membrane, and the particles are deposited on the filter membrane. When the β-ray irradiates the filter membrane deposited with particles, the energy of the β-ray decays, and the mass concentration of the particles can be obtained according to the attenuation amount to complete the monitoring of the pollution of atmospheric environmental particles.
[0004] The existing atmospheric particle sampling device for environmental monitoring has a complex structure, high cost, cumbersome operation steps, wastes manpower, and affects the sampling efficiency;
[0005] In addition, traditional detectors cannot identify metal particles; cannot capture out-of-tolerance particle samples for further analysis; and cannot perform repeatability and reproducibility tests on the particle samples captured by the dust collection carrier sheet.
[0006] The foregoing description is provided to give general background information and does not necessarily constitute prior art. Summary of the Utility Model
[0007] The purpose of the utility model is to provide a real-time particle monitor, which can efficiently and closely monitor particles in the production environment from the perspectives of space and time with the lowest labor cost.
[0008] The utility model provides a real-time particle monitor, which includes a housing, a main unit, an optical microscope, a light source and a particle capture specimen slide; the cross-section of the housing is in the shape of a right trapezoid, the light source is installed inside the housing, the optical microscope is fixed on the inclined surface of the housing, and the optical microscope is an optical microscope with a high-precision camera of tens of millions of pixels; the optical microscope is connected to the light source; the light source is a light source with two-angle crossed polarizers; the particle capture specimen slide is fixed at the bottom of the housing, and the particle capture specimen slide is located directly in front of the lens of the optical microscope and parallel to the mirror surface of the optical microscope; the main unit is fixedly connected to the side surface of the housing, and both the optical microscope and the light source are connected to the main unit.
[0009] Further, a light source with two-angle crossed polarizers is provided between the particle capture specimen slide and the optical microscope; the light source with two-angle crossed polarizers can simultaneously capture the process of metal particles changing from bright to dim under cross-polarization during image acquisition, so as to automatically identify reflective metal particles.
[0010] Further, the real-time particle monitor further includes a protective cover, the protective cover is fixedly connected to the inclined surface of the housing, and the optical microscope is located inside the protective cover; a shooting port is provided on one side of the protective cover close to the lens of the optical microscope.
[0011] Further, an arc-shaped notch is provided in front of the protective cover, the axis of the arc-shaped notch is parallel to the vertical direction, and the axis of the arc-shaped notch passes through the center of the particle capture specimen slide.
[0012] Further, an alarm lamp is connected to the top of the main unit through a bracket, and the alarm lamp is connected to the main board of the main unit.
[0013] Further, the particle capture specimen slide includes a specimen slide and a dust-falling sticker; the specimen slide is fixed on the housing, a circular groove is provided in the middle of the specimen slide, and the dust-falling sticker is laid at the bottom of the circular groove.
[0014] Further, the dust-falling sticker includes a white polymer single-sided adhesive and a base paper; the base paper is circular, the white polymer single-sided adhesive is coated on one side of the base paper, and the other side of the base paper is attached to the bottom of the circular groove.
[0015] Further, a DP line interface, a network cable interface, a serial port and a power supply interface are provided on the side of the housing away from the optical microscope, and the DP line interface, the network cable interface, the serial port and the power supply line are all connected to the main unit; a main switch button is provided on the main unit.
[0016] The present utility model also provides a monitoring method, including the above real-time particle monitor.
[0017] Further, the monitoring method includes the following steps:
[0018] S1: Distribute multiple real-time particle monitors in a production environment in a topological structure and communicate with a central control computer through a LAN;
[0019] S2: Set the automatic photographing interval time of an optical microscope to a first preset time;
[0020] S3: The optical microscope takes two consecutive photos every first preset time;
[0021] S4: Image a particle capture slide through the optical microscope with a light source with two crossed polarizers at different angles, observe the particle capture slide, and perform material analysis on the particles on the particle capture slide;
[0022] S5: Compare the material analysis results at intervals of the first preset time and record the results.
[0023] When the real-time particle monitor of the present utility model is in use, multiple real-time particle monitors are distributed in a production environment in a topological structure and communicate with a central control computer through a LAN (local area network); the optical microscope will continuously photograph the changes of particles falling on the dust sticking paper in real time and perform material analysis through a light source; at the same time, compare the material analysis results at different time intervals and record the results, so as to realize the monitoring and analysis of the real-time particle situation in the production environment; the structure of the present utility model is simple and the manufacturing cost is low. At the same time, from the perspectives of space and time, the particles in the production environment are efficiently and closely monitored with the lowest labor cost; compared with traditional detectors, the present utility model can identify metal particles; it can capture out-of-tolerance particle samples for further analysis; the particle samples captured by the dust capture slide can be used for repeatability and reproducibility tests. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a schematic structural diagram of the real-time particle monitor provided by an embodiment of the present utility model.
[0025] Figure 2 is Figure 1 an internal plane schematic diagram of the real-time particle monitor in
[0026] Figure 3 is Figure 1 a split structural schematic diagram of the real-time particle monitor in
[0027] Figure 4 is Figure 1 a front view schematic diagram of the real-time particle monitor in
[0028] Figure 5 is Figure 1 a top view schematic diagram of the real-time particle monitor in
[0029] Figure 6 a flowchart schematic diagram of the monitoring method provided by the embodiment of the present invention.
[0030] The reference numerals and components involved in the drawings are as follows:
[0031] 1. Housing 11. DP line interface 12. Network cable interface
[0032] 13. Serial port 14. Power supply interface 2. Host
[0033] 21. Bracket 22. Alarm lamp 23. Main switch button
[0034] 3. Optical microscope 4. Light source 5. Particle capture slide
[0035] 51. Slide 52. Dust sticker 53. Circular groove
[0036] 7. Protective cover 71. Shooting port 72. Arc-shaped notch Specific embodiments
[0037] The following combines the drawings and embodiments to further describe in detail the specific embodiments of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.
[0038] The terms "first", "second", "third", "fourth", etc. in the specification and claims of the present invention are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence.
[0039] Embodiment 1
[0040] Figure 1 is a structural schematic diagram of the real-time particle monitor provided by the embodiment of the present invention, Figure 2 is Figure 1 an internal plane schematic diagram of the real-time particle monitor in Figure 3 is Figure 1 a split structural schematic diagram of the real-time particle monitor in Figure 4 is Figure 1 a front view schematic diagram of the real-time particle monitor in Figure 5 is Figure 1 a top view schematic diagram of the real-time particle monitor in. Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5, the real-time particle monitor provided by the embodiment of the present utility model includes a housing 1, a main unit 2, an optical microscope 3, a light source 4 and a particle capture slide 5; the cross-section of the housing 1 is a right trapezoid, the light source 4 is installed inside the housing 1, the optical microscope 3 is fixed on the inclined surface of the housing 1, and the optical microscope 3 is an optical microscope with a high-precision camera of tens of millions of pixels; the optical microscope 3 is connected to the light source 4; the light source 4 is a light source with two-angle crossed polarizers; the particle capture slide 5 is fixed at the bottom of the housing 1, and the particle capture slide 5 is located directly in front of the lens of the optical microscope 3 and parallel to the mirror surface of the optical microscope 3; the main unit 2 is fixedly connected to the side of the housing 1, and both the optical microscope 3 and the light source 4 are connected to the main unit 2.
[0041] Specifically, the particle capture slide 5 of the present utility model includes a slide 51 and a dust-falling adhesive paper 52; the slide 51 is fixed on the housing 1, a circular groove 53 is provided in the middle of the slide 51, and the dust-falling adhesive paper 52 is laid at the bottom of the circular groove 53; the dust-falling adhesive paper 52 includes a white polymer single-sided adhesive and a base paper; the base paper is circular, the white polymer single-sided adhesive is coated on one side of the base paper, and the other side of the base paper is attached to the bottom of the circular groove 53; on the side of the housing 1 away from the optical microscope 3, there are a DP line interface 11, a network cable interface 12, a serial port 13 and a power supply interface 14, and the DP line interface 11, the network cable interface 12, the serial port 13 and the power supply line are all connected to the main unit 2; a main switch button 23 is provided on the main unit 2.
[0042] It should be noted that when the real-time particle monitor of the present utility model is in use, multiple real-time particle monitors are distributed in the production environment in a topological structure and communicate with a central control computer through a LAN (local area network); the optical microscope 3 will capture the particle changes on the dust-falling adhesive paper 52 in real time and perform material analysis through the light source 4; at the same time, the material analysis results at different time intervals are compared and the results are recorded, so as to realize the monitoring and analysis of the real-time particle situation in the production environment; the structure of the present utility model is simple and the manufacturing cost is low. At the same time, from the perspectives of space and time, the particles in the production environment are efficiently and closely monitored with the lowest labor cost.
[0043] The real-time particle monitor of the present utility model can identify metal particles compared with traditional detectors; it can capture out-of-tolerance particle samples for further analysis; the particle samples captured by the dust-falling capture slide can be used for repeatability and reproducibility tests.
[0044] Further refer to Figure 2, a light source 4 with two-angle crossed polarizers is provided between the particle capture slide 5 and the optical microscope 3; the light source 4 with two-angle crossed polarizers can simultaneously capture the process of the metal particles changing from bright to dim under cross-polarization in the captured image, so as to automatically identify the reflective metal particles.
[0045] Further referring to Figure 1 , Figure 5 , the real-time particle monitor of the present utility model further includes a protective cover 7, the protective cover 7 is fixedly connected to the inclined surface of the housing 1, and the optical microscope 3 is located inside the protective cover 7; a shooting port 71 is provided on one side of the protective cover 7 close to the lens of the optical microscope 3; an arc-shaped notch 72 is provided in front of the protective cover 7, the axis of the arc-shaped notch 72 is parallel to the vertical direction, and the axis of the arc-shaped notch 72 passes through the center of the particle capture slide 5.
[0046] The arc-shaped notch 72 of the present utility model is in the vertical direction and does not affect the particles in the environment from falling onto the particle capture slide 5.
[0047] Further referring to Figure 1 , an alarm lamp 22 is connected above the main unit 2 through a bracket 21, and the alarm lamp 22 is connected to the main board of the main unit 2. When the particle density in the environment exceeds the preset density value, the alarm lamp 22 will give an alarm.
[0048] Figure 6 is a schematic flow chart of the monitoring method provided by the embodiment of the present utility model. Please refer to Figure 6 , the present utility model also provides a monitoring method, including the above-mentioned real-time particle monitor.
[0049] Furthermore, the monitoring method includes the following steps:
[0050] S1: A plurality of real-time particle monitors are distributed in the production environment in a topological structure and communicate with a central control computer through a LAN;
[0051] S2: Set the automatic photographing interval time of the optical microscope 3 to a first preset time (for example, 1 second, 2 seconds or 5 seconds);
[0052] S3: The optical microscope 3 takes two consecutive photos every first preset time;
[0053] S4: Image the particle capture slide 5 through the optical microscope 3 and the light source 4 with two-angle crossed polarizers, observe the particle capture slide 5, and perform material analysis on the particles on the particle capture slide 5;
[0054] S5: Compare the material analysis results at an interval of the first preset time and record the results.
[0055] Based on the above description, the advantages of the present utility model are as follows:
[0056] 1. For the real-time particle monitor of the present utility model, when in use, multiple real-time particle monitors are distributed in the production environment in a topological structure and communicate with a central control computer through a LAN (local area network); the optical microscope 3 will take real-time pictures of the particle changes on the dust sticking paper 52 and conduct material analysis through the light source 4; at the same time, the material analysis results at different time intervals are compared and the results are recorded, so as to realize the monitoring and analysis of the real-time particle situation in the production environment;
[0057] 2. The real-time particle monitor of the present utility model has a simple structure and low manufacturing cost. At the same time, from the perspectives of space and time, it can efficiently and closely monitor the particles in the production environment with the lowest labor cost.
[0058] 3. Compared with traditional detectors, the real-time particle monitor of the present utility model can identify metal particles; can capture out-of-tolerance particle samples for further analysis; the particle samples captured by the dust collection carrier sheet can be used for repeatability and reproducibility tests.
[0059] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims
1. A real-time particle monitor, characterized in that, It includes a housing (1), a main unit (2), an optical microscope (3), a light source (4) and a particle capture slide (5); The cross-section of the housing (1) is a right trapezoid. The light source (4) is installed inside the housing (1). The optical microscope (3) is fixed on the inclined surface of the housing (1). The optical microscope (3) is an optical microscope with a high-precision camera of tens of millions of pixels; the optical microscope (3) is connected to the light source (4); the light source (4) is a light source with two-angle crossed polarizers; The particle capture slide (5) is fixed at the bottom of the housing (1). The particle capture slide (5) is located directly in front of the lens of the optical microscope (3) and is parallel to the mirror surface of the optical microscope (3); The main unit (2) is fixedly connected to the side of the housing (1). Both the optical microscope (3) and the light source (4) are connected to the main unit (2).
2. The real-time particle monitor according to claim 1, wherein, A light source (4) with two-angle crossed polarizers is provided between the particle capture slide (5) and the optical microscope (3); the light source (4) with two-angle crossed polarizers can simultaneously capture the process of metal particles changing from bright to dim under cross-polarization during image acquisition, thereby automatically identifying reflective metal particles.
3. The real-time particle monitor according to claim 1, characterized in that, The real-time particle monitor further includes a protective cover (7). The protective cover (7) is fixedly connected to the inclined surface of the housing (1). The optical microscope (3) is located inside the protective cover (7); on one side of the protective cover (7) close to the lens of the optical microscope (3), there is a shooting port (71).
4. The real-time particle monitor according to claim 3, wherein An arc-shaped notch (72) is provided in front of the protective cover (7). The axis of the arc-shaped notch (72) is parallel to the vertical direction. The axis of the arc-shaped notch (72) passes through the center of the particle capture slide (5).
5. The real-time particle monitor according to claim 1, wherein An alarm lamp (22) is connected above the main unit (2) through a bracket (21). The alarm lamp (22) is connected to the main board of the main unit (2).
6. The real-time particle monitor according to claim 1, characterized in that, The particle capture slide (5) includes a slide (51) and a dust-falling sticker (52); the slide (51) is fixed on the housing (1). A circular groove (53) is provided in the middle of the slide (51). The dust-falling sticker (52) is laid at the bottom of the circular groove (53).
7. The real-time particle monitor according to claim 6, characterized in that, The dust-falling sticker (52) includes a white polymer single-sided adhesive and a base paper; the base paper is circular. The white polymer single-sided adhesive is coated on one side of the base paper. The other side of the base paper is attached to the bottom of the circular groove (53).
8. The real-time particle monitor according to claim 1, characterized in that, A DP line interface (11), a network cable interface (12), a serial port (13) and a power cord interface (14) are provided on one side of the housing (1) away from the optical microscope (3). The DP line interface (11), the network cable interface (12), the serial port (13) and the power cord are all connected to the main unit (2); a main switch button (23) is provided on the main unit (2).