Three-dimensional fluid monitoring particle counter

Abstract

The utility model provides a three-dimensional fluid monitoring particle counter, and relates to the technical field of particle counting. Comprising a laser emission module, a test pool, a signal processing module and a PC. A fluid sample is filled in the testing pool; the laser emission module is used for enabling an emitted light beam to penetrate into the test pool, and a fluid sample in the test pool performs refraction, scattering and diffuse reflection on the laser beam; the signal processing module is used for simultaneously collecting spectrums of the fluid sample after refraction, scattering and diffuse reflection of the laser beams from three dimensions, and measuring and counting the spectrums; and the signal processing module is electrically connected with the PC and is used for sending detection data to the PC, so that the measurement precision of fluid particles is improved to a great extent, and the omission ratio during particle detection is also reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of particle counting, in particular to a three-dimensional fluid monitoring particle counter. Background Art

[0002] Fluid monitoring particle counters are devices specifically used to detect the concentration of particles in liquids and their particle size distribution. This type of counter is often used in various fields with strict requirements on liquid cleanliness, such as: in the semiconductor manufacturing industry, during wafer production and chip cleaning, it is necessary to ensure that the chemical reagents and ultrapure water used do not contain tiny particles that may affect product quality; in the aerospace industry, it is essential to monitor the cleanliness of lubricating oil or hydraulic oil used in aircraft engines, hydraulic systems and other key components to prevent mechanical wear and equipment failure caused by particles; in the pharmaceutical and biotechnology industries, in drug production, medical equipment disinfection and life science experiments, it is necessary to monitor microorganisms, cell fragments or other impurity particles in liquid media; in the chemical and energy industries, real-time monitoring of particles in reaction solutions, cooling water systems, steam generation systems, etc. is performed to ensure process safety and product quality.

[0003] However, existing fluid monitoring particle counters collect data through single-light and single-dimensional methods, resulting in a high missed detection rate and low measurement accuracy. Utility Model Content

[0004] The utility model aims to provide a three-dimensional fluid monitoring particle counter, which not only improves the measurement accuracy but also reduces the missed detection rate during detection.

[0005] To achieve the above-mentioned purpose, the utility model proposes the following technical solutions: a three-dimensional fluid monitoring particle counter, comprising: a laser emission module, a test cell, a signal processing module and a PC; the test cell is filled with a fluid sample; the laser emission module is used to transmit the emission light beam into the test cell, and the fluid sample in the test cell refracts, scatters and diffusely reflects the laser light beam; the signal processing module is used to simultaneously collect the spectrum of the laser light beam refracted, scattered and diffusely reflected by the fluid sample from three dimensions, and measure and count; the signal processing module is electrically connected to the PC, and is used to send the detection data to the PC.

[0006] Further, in the utility model, the laser emission module includes: an adapter, which is used to transmit the beam signal emitted by the laser emission module to the test cell, and a laser protection driver is provided inside the adapter, which is used to protect the stable operation of the internal circuit of the laser emission module;

[0007] A narrow beam laser light source is connected to the laser protection driver and is used to emit a highly concentrated laser beam, which then passes through a composite shaping optical path arranged in front and is used to accurately control and operate the direction of the laser beam;

[0008] The laser constant temperature device is located in front of the composite shaping optical path and is used to control the temperature of the optical elements in the laser emission module.

[0009] Further, in the present utility model, the test pool comprises: a test cavity, three test windows are arranged on the side wall of the test cavity, a microporous flow path is arranged inside the test cavity, and a fluid sample is loaded to make the fluid sample flow on a micro scale;

[0010] The liquid path sealing device is arranged at both ends of the microporous flow path and is used for sealing and storing the fluid to be detected.

[0011] Furthermore, in the present invention, the signal processing module includes:

[0012] Three signal acquisition and receiving units are respectively placed opposite to the three test windows;

[0013] A signal processing unit, the three signal acquisition and receiving units are respectively connected to the signal processing unit, a signal amplifying circuit is connected to the signal processing unit, a waveform recording adjustment unit is connected to the signal amplifying circuit; a noise suppression unit is connected to the waveform recording adjustment unit, and the noise suppression unit is connected to the PC.

[0014] Furthermore, in the present invention, the number of the signal acquisition and receiving units is consistent with the number of the test windows.

[0015] Beneficial effects: The technical solution of this application has the following technical effects:

[0016] The utility model first transmits the emission light beam into the test pool through the laser emission module, and then refracts, scatters and diffusely reflects the laser light beam through the fluid sample in the test pool. Then, the signal processing module is used to simultaneously collect the spectrum of the laser light beam refracted, scattered and diffusely reflected by the fluid sample from three dimensions, and measure and count, and send the detection data of the fluid sample to a PC, which greatly improves the measurement accuracy of fluid particles and reduces the missed detection rate during particle detection.

[0017] It should be appreciated that all combinations of the foregoing concepts, as well as additional concepts described in greater detail below, may be considered part of the inventive subject matter of the present disclosure, provided such concepts are not mutually inconsistent.

[0018] The foregoing and other aspects, embodiments and features of the present invention can be more fully understood from the following description in conjunction with the accompanying drawings. Other additional aspects of the present invention, such as the features and / or beneficial effects of the exemplary embodiments, will be apparent from the following description or learned through practice of the specific embodiments according to the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of the structure of a three-dimensional fluid monitoring particle counter provided by an embodiment of the utility model;

[0021] In the figure, the meaning of each figure mark is as follows: 1-laser emission module; 2-test cell; 3-signal processing module; 4-PC; 11-adapter; 12-laser protection driver; 13-narrow light laser light source; 14-composite shaping optical path; 15-laser constant temperature device; 21-test cavity; 22-test window; 23-liquid path sealing device; 24-microporous flow path; 31-signal acquisition and receiving unit; 32-signal processing unit; 33-signal amplification circuit; 34-waveform recording and adjustment unit; 35-noise suppression unit. DETAILED DESCRIPTION

[0022] In order to better understand the technical content of the utility model, specific embodiments are cited and described as follows in conjunction with the accompanying drawings. In this disclosure, various aspects of the utility model are described with reference to the accompanying drawings, and many illustrative embodiments are shown in the accompanying drawings. The embodiments of the present disclosure are not necessarily defined to include all aspects of the utility model. It should be understood that the various concepts and embodiments introduced above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in the utility model are not limited to any implementation method. In addition, some aspects disclosed in the utility model can be used alone, or used in any appropriate combination with other aspects disclosed in the utility model.

[0023] Figure 1 A schematic structural diagram of a three-dimensional fluid monitoring particle counter provided in one embodiment of the utility model.

[0024] refer to Figure 1 The present utility model embodiment provides a three-dimensional fluid monitoring particle counter, comprising:

[0025] Laser emission module 1, test pool 2, signal processing module 3 and PC 4; the test pool 2 is filled with fluid sample; the laser emission module 1 is used to transmit the emission light beam to the test pool 2, and the fluid sample in the test pool 2 refracts, scatters and diffusely reflects the laser light beam; the signal processing module 3 is used to collect the spectrum of the laser light beam refracted, scattered and diffusely reflected by the fluid sample from three dimensions at the same time, and measure and count; the signal processing module 3 is electrically connected to the PC 4, and is used to send the detection data to the PC 4, which greatly improves the measurement accuracy of fluid particles and reduces the missed detection rate during particle detection.

[0026] Further, the laser emission module 1 includes: an adapter 11. The adapter 11 in the present application is a mechanical adapter that can be used to connect mechanical parts of different types or sizes. It enables these parts to work together without changing their original structure or function, and the purpose is to ensure that two or more mechanical parts can be effectively and safely connected to transmit motion, torque, load or signal. Specifically, the adapter 11 is used in the laser emission module 1 to transmit the emitted beam signal to the test pool 2. The adapter 11 is also provided with a laser protection driver 12, which can adjust the laser output power according to actual needs to prevent burns or other safety risks caused by excessive power; it also provides a physical or electronic interlocking device, and the laser can only start working when all safety conditions are met; when the laser operating parameters (such as temperature, current, voltage, etc.) exceed the preset safety range, the laser output is automatically cut off to prevent damage caused by overheating, overloading, etc. of the equipment; the laser protection driver 12 is an indispensable part of the laser equipment and plays a vital role in ensuring the safety of laser applications.

[0027] The narrow beam laser light source 13 is connected to the laser protection driver 12 and is used to emit a highly concentrated laser beam, which then passes through the composite shaping optical path 14 arranged in front and is used to accurately control and operate the direction of the laser beam.

[0028] In this embodiment, the laser beam generated by the narrow light laser light source 13 has a very small frequency or wavelength dispersion, and the laser beam has extremely high coherence in time and space. It can achieve long-distance transmission and precise interference measurement. At the same time, it can effectively reduce crosstalk between signals and improve data transmission rate and channel capacity.

[0029] The laser constant temperature device 15 is located directly in front of the composite shaping optical path 14 and is used to control the temperature of the optical elements in the laser emitting module 1 .

[0030] In this embodiment, a large amount of heat is generated when the laser is working. If the heat is not dissipated and the temperature cannot be controlled in a timely and effective manner, the laser output may be unstable, the device may age or even be damaged. The purpose of setting the laser constant temperature device 15 is to maintain the core components inside the laser device within an extremely stable operating temperature range, thereby ensuring the stability of the laser performance and the service life.

[0031] Further, the test pool 2 comprises: a test cavity 21, which may be a cube or a rectangular parallelepiped structure, three test windows 22 are arranged on the side wall of the test cavity 21, and a microporous flow path 24 is arranged inside the test cavity 21, which is filled with a fluid sample to enable the fluid sample to flow on a micro scale;

[0032] The liquid path sealing device 23 is arranged at both ends of the microporous flow path 24 and is used to seal and store the fluid to be detected.

[0033] In this embodiment, the laser emitting module 1 is arranged on a side of the test cavity 21 where the test window 22 is not arranged. The laser emitting module 1 transmits a light beam through the test cavity 21 until it reaches the microporous flow path 24, and then transmits the collected spectral information to the signal processing unit through three test windows 22 at the same time. The provision of the liquid path sealing device 23 ensures the reliability and safety of the entire liquid path system, and a microporous flow path 24 is arranged inside it. The pore size is usually at the micron level, i.e., between 1-1000 microns, which can effectively improve the test accuracy.

[0034] The test cavity and the test window can be made of sapphire, whose main chemical component is aluminum oxide. As a hard, wear-resistant and highly transparent material, it has excellent optical properties. It is also widely used in advanced optical components due to its high transmittance and scratch resistance. It can also be made of ruby, whose refractive index is approximately between 1.762 and 1.770, and has a certain birefringence phenomenon, with a birefringence of approximately 0.008 to 0.010; ruby ​​has a low dispersion of approximately 0.018, and its hardness is very high, with a Mohs hardness of 9; it can also be made of diamond, which is a naturally formed mineral composed of pure carbon elements, with a Mohs hardness of 10, and a refractive index of approximately 2.417, which has a strong refractive effect on light, resulting in it having extremely high gloss and scintillation, and its dispersion is extremely high, approximately 0.044.

[0035] Further, the signal processing module 3 includes: three signal acquisition and receiving units 31, which are respectively placed opposite to the three test windows 22;

[0036] The signal processing unit 32, the three signal acquisition and receiving units 31 are respectively connected to the signal processing unit 32, the signal amplifying circuit 33 is connected to the signal processing unit 32, and the waveform recording adjustment unit 34 is connected to the signal amplifying circuit 33; the noise suppression unit 35 is connected to the waveform recording adjustment unit 34, and the noise suppression unit 35 is connected to the PC 4.

[0037] In this embodiment, three test windows are equidistantly arranged on the side wall of the test cavity from different orientations, and a signal acquisition and receiving unit is respectively arranged at the corresponding window position of the three test windows. The particles of the fluid sample in the microporous flow path pass through the three test windows to transmit the spectral data collected to the signal acquisition and receiving unit through multiple dimensions. Then the signal processing unit processes the collected spectral data, and then amplifies the input weak electrical signal to the required amplitude level through the signal amplification circuit, while maintaining the waveform characteristics and integrity of the original signal as much as possible. The collected waveform data is then adjusted by the waveform recording adjustment unit, and then processed by the noise suppression unit to ensure the quality of signal transmission and reception. Finally, all the test results are transmitted to the PC to obtain the number and particle diameter of all particles in the fluid, thereby effectively improving the problems of low measurement accuracy and high missed detection rate.

[0038] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A three-dimensional fluid monitoring particle counter, characterized in that: include: Laser emission module (1), test cell (2), signal processing module (3) and PC (4); The test pool (2) contains a fluid sample; The laser emission module (1) is used to transmit an emission light beam into the test pool (2), and the fluid sample in the test pool (2) refracts, scatters and diffusely reflects the laser beam; The signal processing module (3) is used to simultaneously collect spectra of the laser beam refracted, scattered and diffusely reflected by the fluid sample from three dimensions, and to perform measurement and counting; The signal processing module (3) is electrically connected to the PC (4) and is used to send the detection data to the PC (4).

2. The three-dimensional fluid monitoring particle counter according to claim 1, characterized in that: The laser emission module (1) comprises: An adapter (11) is used to transmit the light beam signal emitted by the laser emission module (1) to the test cell (2); a laser protection driver (12) is provided inside the adapter (11) to protect the stable operation of the internal circuit of the laser emission module (1); A narrow beam laser light source (13) is connected to the laser protection driver (12) and is used to emit a highly concentrated laser beam, which then passes through a composite shaping optical path (14) arranged directly in front and is used to accurately control and operate the direction of the laser beam; The laser constant temperature device (15) is located directly in front of the composite shaping optical path (14) and is used to control the temperature of the optical elements in the laser emission module (1).

3. The three-dimensional fluid monitoring particle counter according to claim 1, characterized in that: The test pool (2) comprises: A test cavity (21), wherein three test windows (22) are arranged on the side wall of the test cavity (21), and a microporous flow path (24) is arranged inside the test cavity, and a fluid sample is loaded therein, so that the fluid sample flows on a microscale; The liquid path sealing device (23) is arranged at both ends of the microporous flow path (24) and is used to seal and store the fluid to be detected.

4. The three-dimensional fluid monitoring particle counter according to claim 3, characterized in that: The signal processing module (3) comprises: Three signal collection and receiving units (31) are respectively placed opposite to the three test windows (22); A signal processing unit (32), the three signal acquisition and receiving units (31) are connected to the signal processing unit (32), a signal amplifying circuit (33) is connected to the signal processing unit (32), a waveform recording adjustment unit (34) is connected to the signal amplifying circuit (33); a noise suppression unit (35) is connected to the waveform recording adjustment unit (34), and the noise suppression unit (35) is connected to the PC (4).

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