CN109239052B - Astronaut urine detection method based on liquid core waveguide Raman spectrum - Google Patents
Astronaut urine detection method based on liquid core waveguide Raman spectrum Download PDFInfo
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Abstract
The invention discloses a liquid core waveguide Raman spectrum-based astronaut urine detection method, which is realized on a liquid core waveguide Raman spectrum-based astronaut urine detection system. The method has the advantages that the detection method based on the moving liquid core waveguide Raman spectrum is adopted, so that the weak Raman signal can be enhanced, a large amount of samples can be counted and measured, and the detection of the components of the urine of the astronauts is more reliable; a direct current electric field method is adopted in waste liquid collection, so that the requirement under the microgravity environment is met; and finally, clean water is adopted for cleaning the liquid core, so that the requirements of environmental protection and sanitation are met.
Description
Technical Field
The invention relates to a micro-area Raman detection method, in particular to a micro-area detection method based on liquid core waveguide laser Raman spectroscopy, which is suitable for daily monitoring of the urine of astronauts in a space station microgravity environment and belongs to the field of photoelectric detection.
Background
Manned space refers to the flying activities of people in space to and from the earth, such as driving a spacecraft to carry out various sciences, tests, researches and the like. The regions where astronauts work are mainly manned spacecrafts, space stations, extraterrestrial camps and the like. Where space stations are the most common and longer-term workplaces. In space stations, astronauts are in a long term microgravity environment and their physical condition needs to be monitored at any time in order to discover their potential health effects and problems.
Health monitoring of astronauts in a spacecraft may take many test samples. The monitoring of the urine of the astronaut is vital and easy to obtain, and monitored substances comprise creatinine, protein, urea and the like. Creatinine in urine, for example, is a product of muscle metabolism in the human body and is primarily excreted by glomerular filtration. The creativity of creatinine can be 1mg per 20g of muscle metabolism, and when the food intake of meat is stable, the creativity of creatinine is relatively constant without great change of the muscle metabolism of the body. Urea nitrogen increased with creatinine indicating severe kidney damage.
At present, different principles including a pH value, a specific density method, an acid-base index agent, an enzyme method and the like are adopted when a urine detection instrument detects different substances in urine, and a large amount of reagents and the like are required for supporting, so that the requirement of operation and detection of astronauts cannot be met. Therefore, a detection method suitable for the astronaut to rapidly, efficiently and conveniently find and design corresponding detection equipment are needed to meet the requirement of health real-time diagnosis of the astronaut.
The laser Raman spectroscopy method is a convenient and feasible method for detecting macromolecules, but because the contents of creatinine, protein, urea and the like in urine are low and Raman signals are weak, if the Raman spectroscopy method is used for monitoring the urine of astronauts, the problem of weak signals needs to be solved, and in addition, the requirements of the astronauts in the aspects of microgravity, sample introduction, residual liquid recovery, compactness, durability and the like need to be considered.
Disclosure of Invention
In view of the above requirements, the present invention aims to provide a method for detecting urine of an astronaut based on liquid core waveguide raman spectroscopy, which can detect raman signals of trace substances such as creatinine, protein, urea and the like in urine under the aerospace environment requirements in the aspects of microgravity, compactness, durability and the like, thereby realizing real-time diagnosis of part of physiological indexes of the astronaut reflecting health conditions.
The invention is realized by the following steps:
the invention provides a liquid core waveguide Raman spectrum-based astronaut urine detection method, which is realized on a liquid core waveguide Raman spectrum-based astronaut urine detection system, wherein the system mainly comprises a main controller, a collection subsystem, a spectrum subsystem and a sample introduction subsystem;
the spectrum subsystem is responsible for laser emission and Raman signal reception and comprises a liquid core waveguide tube, a window glass slide, a microscope objective, a dichroic mirror, an interference optical filter, a beam expanding lens, a Raman laser, a Rayleigh optical filter, an optical fiber coupling lens, a receiving optical fiber, a Raman spectrometer, a total reflection mirror and a seal; one end of the liquid core waveguide tube is attached to the window glass slide, the other end of the liquid core waveguide tube is attached to the total reflection mirror, and the total reflection mirror is reinforced and fixed by a seal;
the sample introduction subsystem is used for sending a test liquid sample (injection: astronaut urine) into the spectrum subsystem for analysis; the sample introduction subsystem consists of a connecting hose, a liquid inlet device, an electric piston, a stepper motor, a flow inlet pipe, a liquid inlet and a sealing cover; introducing the test liquid sample into a liquid inlet device through a liquid inlet, and covering a sealing cover after the introduction is finished; the inlet pipe is communicated with the liquid core waveguide tube, and the inlet pipe is connected with the liquid inlet device through the connecting hose; the stepper motor can drive the electric piston to move horizontally in the liquid inlet device, and the test liquid sample is slowly pushed into the liquid core waveguide tube through the connecting hose and the inflow tube;
the collecting subsystem is used for collecting the test liquid sample in the microgravity environment of the space station to prevent the environment from being polluted; the collecting subsystem consists of a direct current power supply, an electric cathode, a spherical cover, a flow outlet pipe, an electric anode and a waste liquid tank; the outflow pipe is communicated with the liquid core waveguide pipe; the inner wall of the spherical cover is provided with an electric cathode, and the inlet of the waste liquid tank is provided with an electric anode; the positive electrode and the negative electrode of the direct current power supply are respectively connected with the electric anode and the electric cathode to maintain an electric field between the electric anode and the electric cathode; the test liquid sample in the liquid core waveguide tube is sprayed to the electric cathode along the spraying axis through the outflow tube, so that the test liquid sample with negative charges is attracted to the electric anode under the action of an electric field and enters the waste liquid tank;
the Raman laser can emit continuous laser beams with a certain wavelength lambda from right to left along an optical main shaft, the continuous laser beams are expanded by a beam expander (the diameter of the obtained laser beams is matched with the entrance pupil of a microscope objective), then the laser beams pass through an interference filter to obtain narrow-frequency Raman laser beams, then the narrow-frequency Raman laser beams pass through a dichroic mirror, pass through the microscope objective and pass through a window glass slide, and can be focused into a liquid core waveguide tube to test liquid samples (such as astronauts urine), Raman forward scattering signals excited at a focusing point are transmitted leftwards along the axis of the liquid core (the axis of the liquid core is completely overlapped with the optical main shaft) and continuously collide with molecules in the test liquid samples to obtain accumulation and reinforcement, after the Raman forward scattering signals are transmitted to a total reflection mirror, the Raman forward scattering signals are transmitted rightwards along the axis of the liquid core through reflection, and then continuously collide with the molecules in the test liquid samples again, the Raman scattering signals are further reinforced, and sequentially pass, after being reflected by the dichroic mirror, the Raman scattered light is transmitted along a receiving optical axis, and after being filtered by the Rayleigh filter to remove the pumping light with the wavelength of lambda, the Raman scattered light enters a receiving optical fiber through the focusing of the optical fiber coupling mirror and is transmitted to a Raman spectrometer for analysis;
the main controller is used for starting and closing the direct-current power supply, the Raman laser and the Raman spectrometer, sending a control command to the stepper motor, setting working parameters of the Raman spectrometer, and receiving spectral data of the Raman spectrometer for analysis;
the invention provides a liquid core waveguide Raman spectrum-based astronaut urine detection method, which comprises the following steps:
(1) continuous sample introduction of test liquid
Introducing a test liquid sample (injection: astronaut urine) into the liquid inlet device through the liquid inlet, and covering the sealing cover after the introduction is finished; the main controller sends an instruction to start the direct current power supply and then sends a control instruction to the stepper motor to drive the electric piston to slowly translate to the right in the liquid inlet device, and the test liquid sample is slowly pushed into the liquid core waveguide tube through the connecting hose and the inflow tube; the sample introduction process is continuously carried out, and the whole test process is continued until the test is finished;
(2) dynamic liquid core waveguide raman testing
When the whole liquid core waveguide tube is filled with the test liquid sample, the main controller sends an instruction to start the Raman laser and the Raman spectrometer and set working parameters of the Raman spectrometer; the Raman laser emits a continuous laser beam with a certain wavelength lambda from right to left, the continuous laser beam is expanded by a beam expander and then passes through an interference filter to obtain a narrow-frequency Raman laser beam, then the narrow-frequency Raman laser beam passes through a dichroic mirror, passes through a microscope objective and a window glass slide, and is focused into a liquid sample (such as astronauts' urine) to be tested in a liquid core waveguide tube, a Raman forward scattering signal excited at a focusing point is transmitted leftwards along the axis of a liquid core and continuously collides with molecules in the liquid sample to be tested, so that accumulation and reinforcement are obtained, the Raman forward scattering signal is transmitted to a full-reflection mirror, then is transmitted rightwards along the axis of the liquid core through reflection, and continuously collides with the molecules in the liquid sample to be tested again, the Raman scattering signal is further reinforced, the Raman scattering signal sequentially passes through the window glass slide and the microscope objective, is reflected by a dichroic mirror and then is transmitted along a receiving optical axis, and the Raman scattering light with, the Raman spectrum data are transmitted into a Raman spectrometer, the Raman spectrometer transmits the Raman spectrum data to a main controller in real time, and the main controller continuously collects and stores the dynamic liquid core waveguide Raman spectrum data along with the continuous sampling;
(3) real-time collection of waste liquid
In the testing process, sample introduction is continuously carried out; the test liquid sample in the liquid core waveguide tube is sprayed to the electric cathode along the spraying axis through the outflow tube, so that the test liquid sample with negative charges is attracted to the electric anode under the action of an electric field and enters the waste liquid tank;
(4) test end and data post-processing
When the electric piston moves to the bottom of the right side in the liquid inlet device in a translation way, the whole liquid inlet device is free from a test liquid sample, and the test is finished; the main controller sends out an instruction to close the Raman laser and the Raman spectrometer; the main controller carries out statistical accumulation and average processing on the obtained multiple groups of dynamic liquid core waveguide Raman spectrum data to obtain Raman spectrum signals reflecting the health condition of the astronauts and related to the contents of creatinine, protein and urea in urine of the astronauts, and compares the signal data with health indexes to finish health assessment;
(5) post-treatment of residual waste liquid
The main controller sends a control command to the stepper motor to drive the electric piston to slowly translate leftwards in the liquid inlet device until reaching the leftmost position of the liquid inlet device; opening the sealing cover, introducing clean water into the liquid inlet device through the liquid inlet, and covering the sealing cover after the introduction is finished; the main controller sends a control instruction to the stepper motor to drive the electric piston to slowly translate to the right in the liquid inlet device, clean water is slowly pushed into the liquid core waveguide tube through the connecting hose and the inflow pipe, meanwhile, residual waste liquid in the liquid core waveguide tube is pressed into the collecting subsystem to be collected until the electric piston translates to the bottom of the right side in the liquid inlet device, at the moment, only clean water exists in the liquid core waveguide tube, the main controller sends an instruction, and the direct-current power supply is disconnected.
The method has the advantages that the detection method based on the moving liquid core waveguide Raman spectrum is adopted, so that the weak Raman signal can be enhanced, a large amount of samples can be counted and measured, and the detection of the components of the urine of the astronauts is more reliable; a direct current electric field method is adopted in waste liquid collection, so that the requirement under the microgravity environment is met; and finally, clean water is adopted for cleaning the liquid core, so that the requirements of environmental protection and sanitation are met.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention, in which: 1-direct current power supply; 2-an electric cathode; 3-spherical cover; 4-injection axis; 5-a flow outlet pipe; 6-liquid core waveguide; 7-liquid core axis; 8-inflow pipe; 9-window slide; 10-microscope objective; 11-optical principal axis; 12-dichroic mirror; 13-interference filter; 14-beam expander; 15-Raman laser; 16-Rayleigh filter; 17-fiber coupled mirror; 18-receiving fiber; 19-Raman spectrometer; 20-connecting hose; 21-liquid inlet device; 22-test liquid sample; 23-electric piston; 24-stepper motor; 25-main controller; 26-total reflection mirror; 27-sealing; 28-an electrical anode; 29-waste tank; 30-collection subsystem; 31-spectroscopic subsystem; 32-sample introduction subsystem; 33-receive optical axis; 34-a liquid inlet; 35-sealing cover.
Detailed Description
The specific embodiment of the present invention is shown in fig. 1.
The method for detecting the urine of the astronaut based on the liquid core waveguide Raman spectrum is realized on a system for detecting the urine of the astronaut based on the liquid core waveguide Raman spectrum, and the system mainly comprises a main controller 25, a collection subsystem 30, a spectrum subsystem 31 and a sample injection subsystem 32;
the spectrum subsystem 31 is responsible for laser emission and Raman signal reception, and is composed of a liquid core waveguide tube 6, a window glass slide 9, a microscope objective 10, a dichroic mirror 12, an interference filter 13, a beam expander 14, a Raman laser 15, a Rayleigh filter 16, an optical fiber coupling mirror 17, a receiving optical fiber 18, a Raman spectrometer 19, a total reflection mirror 26 and a seal 27; one end of the liquid core waveguide tube 6 is attached to the window glass 9, the other end is attached to the total reflection mirror 26, and the total reflection mirror 26 is reinforced and fixed by a seal 27;
the sample injection subsystem 32 is used for sending the test liquid sample 22 (injection: astronaut urine) into the spectrum subsystem 31 for analysis; the sample introduction subsystem 32 consists of a connecting hose 20, a liquid inlet device 21, an electric piston 23, a stepper motor 24, an inflow pipe 8, a liquid inlet 34 and a sealing cover 35; the test liquid sample 22 is led into the liquid inlet device 21 through the liquid inlet 34, and the sealing cover 35 is covered after the liquid inlet is finished; the inflow pipe 8 is communicated with the liquid core waveguide tube 6, and the connection hose 20 connects the inflow pipe 8 with the liquid inlet device 21; the stepper motor 24 can drive the electric piston 23 to move horizontally in the liquid inlet device 21, and slowly push the test liquid sample 22 into the liquid core waveguide tube 6 through the connecting hose 20 and the inlet tube 8;
the collecting subsystem 30 is used for collecting the test liquid sample 22 in the microgravity environment of the space station to prevent the environment from being polluted; the collecting subsystem 30 consists of a direct current power supply 1, an electric cathode 2, a spherical cover 3, a flow outlet pipe 5, an electric anode 28 and a waste liquid tank 29; the outflow pipe 5 is communicated with the liquid core waveguide pipe 6; the inner wall of the spherical cover 3 is provided with an electric cathode 2, and the inlet of a waste liquid box 29 is provided with an electric anode 28; the positive pole and the negative pole of the direct current power supply 1 are respectively connected with the electric anode 28 and the electric cathode 2 to maintain the electric field between the electric anode 28 and the electric cathode 2; the test liquid sample 22 in the liquid core waveguide tube 6 is sprayed to the electric cathode 2 along the spraying axis 4 through the outflow tube 5, so as to be charged with negative charges, and is attracted to the electric anode 28 and enters the waste liquid tank 29 under the action of an electric field;
the Raman laser 15 can emit continuous laser beams with a certain wavelength lambda from right to left along the optical main shaft 11, the continuous laser beams are expanded by the beam expander 14 (the diameter of the obtained laser beams is matched with the entrance pupil of the microscope objective 10), then the laser beams pass through the interference filter 13 to obtain narrow-frequency Raman laser beams, then the laser beams pass through the dichroic mirror 12, pass through the microscope objective 10 and pass through the window glass 9 and can be focused to a test liquid sample 22 (injection: astronaut urine) in the liquid core waveguide 6, Raman forward scattering signals excited at a focusing point are transmitted along the liquid core axis 7 (injection: the liquid core axis 7 is completely overlapped with the optical main shaft 11) to the left and continuously collide with molecules in the test liquid sample 22 to obtain accumulation and reinforcement, the Raman scattering signals are transmitted to the full-reflection mirror 26 and then transmitted along the liquid core axis 7 by reflection and continuously collide with the molecules in the test liquid sample 22 again to further reinforce the Raman scattering signals, after sequentially passing through the window glass 9 and the microscope objective lens 10, the Raman scattered light reflected by the dichroic mirror 12 is transmitted along the receiving optical axis 33, and the Raman scattered light filtered by the Rayleigh filter 16 to remove the pumping light with the wavelength of lambda is focused by the optical fiber coupling mirror 17, enters the receiving optical fiber 18 and is transmitted to the Raman spectrometer 19 for analysis;
the main controller 25 is used for starting and closing the direct current power supply 1, the raman laser 15 and the raman spectrometer 19, sending a control instruction to the stepper motor 24, setting working parameters of the raman spectrometer 19, and receiving spectral data of the raman spectrometer 19 for analysis;
the invention provides a liquid core waveguide Raman spectrum-based astronaut urine detection method, which comprises the following steps:
(1) continuous sample introduction of test liquid
Introducing a test liquid sample 22 (injection: astronaut urine) into the liquid inlet device 21 through the liquid inlet 34, and covering the sealing cover 35 after the introduction is finished; the main controller 25 sends an instruction to start the direct current power supply 1, and then sends a control instruction to the stepper motor 24 to drive the electric piston 23 to slowly translate rightward in the liquid inlet device 21, and slowly push the test liquid sample 22 into the liquid core waveguide tube 6 through the connecting hose 20 and the inflow tube 8; the sample introduction process is continuously carried out, and the whole test process is continued until the test is finished;
(2) dynamic liquid core waveguide raman testing
When the test liquid sample 22 is filled in the whole liquid core waveguide tube 6, the main controller 25 sends out an instruction to start the Raman laser 15 and the Raman spectrometer 19, and sets the working parameters of the Raman spectrometer 19; the Raman laser 15 emits a continuous laser beam with a certain wavelength lambda from right to left, the continuous laser beam is expanded by the beam expander 14 and then passes through the interference filter 13 to obtain a narrow-frequency Raman laser beam, then the narrow-frequency Raman laser beam passes through the dichroic mirror 12, passes through the microscope objective 10 and passes through the window glass 9, and is focused into the liquid core waveguide 6 to test the liquid sample 22 (such as the urine of an astronaut), a Raman forward scattering signal excited at a focusing point is transmitted along the liquid core axis 7 to the left and continuously collides with molecules in the test liquid sample 22 to be accumulated and enhanced, after being transmitted to the total reflection mirror 26, the Raman forward scattering signal is transmitted along the liquid core axis 7 by reflection to the right and continuously collides with the molecules in the test liquid sample 22 again, the Raman scattering signal is further enhanced, after sequentially passing through the window glass 9 and the microscope objective 10, after being reflected by the dichroic mirror 12, the Raman scattering signal is transmitted along the receiving optical axis 33, the Raman scattering light with pumping light with the wavelength lambda filtered by the Rayleigh filter 16, the Raman spectrum data is transmitted into the Raman spectrometer 19, the Raman spectrometer 19 transmits the Raman spectrum data to the main controller 25 in real time, and the main controller 25 continuously collects and stores the dynamic liquid core waveguide Raman spectrum data along with the continuous sampling;
(3) real-time collection of waste liquid
In the testing process, sample introduction is continuously carried out; the test liquid sample 22 in the liquid core waveguide tube 6 is sprayed to the electric cathode 2 along the spraying axis 4 through the outflow tube 5, so as to be charged with negative charges, and is attracted to the electric anode 28 and enters the waste liquid tank 29 under the action of an electric field;
(4) test end and data post-processing
When the electric piston 23 is translated to the bottom of the right side in the liquid inlet device 21, the whole liquid inlet device 21 has no test liquid sample 22, and the test is finished; the main controller 25 sends out an instruction to close the Raman laser 15 and the Raman spectrometer 19; the main controller 25 performs statistical accumulation and average processing on the obtained multiple groups of dynamic liquid core waveguide Raman spectrum data to obtain Raman spectrum signals reflecting the health condition of the astronauts and related to the contents of creatinine, protein and urea in urine of the astronauts, and compares the signal data with health indexes to complete health assessment;
(5) post-treatment of residual waste liquid
The main controller 25 sends a control instruction to the stepper motor 24 to drive the electric piston 23 to slowly translate leftwards in the liquid inlet device 21 until reaching the leftmost position of the liquid inlet device 21; opening the sealing cover 35, leading clean water into the liquid inlet device 21 through the liquid inlet 34, and covering the sealing cover 35 after leading is completed; the main controller 25 sends a control instruction to the stepper motor 24 to drive the electric piston 23 to slowly translate rightward in the liquid inlet device 21, clean water is slowly pushed into the liquid core waveguide tube 6 through the connecting hose 20 and the inflow pipe 8, meanwhile, residual waste liquid in the liquid core waveguide tube 6 is pressed into the collection subsystem 30 to be collected, and the process is finished until the electric piston 23 translates to the bottom of the right side in the liquid inlet device 21, at the moment, only clean water exists in the liquid core waveguide tube 6, the main controller 25 sends an instruction, and the direct current power supply 1 is disconnected.
Claims (1)
1. A spaceman urine detection method based on liquid core waveguide Raman spectroscopy is realized on a spaceman urine detection system based on liquid core waveguide Raman spectroscopy, and the system comprises a main controller (25), a collection subsystem (30), a spectrum subsystem (31) and a sample injection subsystem (32); the detection method is characterized by comprising the following steps:
1) continuous sample introduction of test liquid
Introducing a test liquid sample, namely the urine of the astronaut into a liquid inlet device through a liquid inlet, and covering a sealing cover after the introduction is finished; the main controller sends an instruction to start the direct current power supply and then sends a control instruction to the stepper motor to drive the electric piston to slowly translate to the right in the liquid inlet device, and the test liquid sample is slowly pushed into the liquid core waveguide tube through the connecting hose and the inflow tube; the sample introduction process is continuously carried out, and the whole test process is continued until the test is finished;
2) dynamic liquid core waveguide raman testing
When the whole liquid core waveguide tube is filled with the test liquid sample, the main controller sends an instruction to start the Raman laser and the Raman spectrometer and set working parameters of the Raman spectrometer; the Raman laser emits a continuous laser beam with a certain wavelength lambda from right to left, the continuous laser beam is expanded by a beam expander and then passes through an interference filter to obtain a narrow-frequency Raman laser beam, then the narrow-frequency Raman laser beam passes through a dichroic mirror, passes through a microscope objective and a window glass slide, and is focused into a liquid sample in a liquid core waveguide tube, a Raman forward scattering signal excited at a focusing point is transmitted leftwards along the axis of a liquid core and continuously collides with molecules in the liquid sample to be tested, so that accumulation and reinforcement are obtained, the Raman forward scattering signal is transmitted to a full-reflection mirror, is reflected rightwards along the axis of the liquid core by reflection, and continuously collides with the molecules in the liquid sample to be tested again, the Raman scattering signal is further reinforced, sequentially passes through the window glass slide and the microscope glass slide, is reflected by the dichroic mirror and then transmitted along a receiving optical axis, the Raman scattering signal after pumping light with the wavelength lambda is filtered by a Rayle, the Raman spectrum data are transmitted into a Raman spectrometer, the Raman spectrometer transmits the Raman spectrum data to a main controller in real time, and the main controller continuously collects and stores the dynamic liquid core waveguide Raman spectrum data along with the continuous sampling;
3) real-time collection of waste liquid
The collecting subsystem is used for collecting the test liquid sample in the microgravity environment of the space station to prevent the environment from being polluted; the collecting subsystem consists of a direct current power supply, an electric cathode, a spherical cover, a flow outlet pipe, an electric anode and a waste liquid tank; the outflow pipe is communicated with the liquid core waveguide pipe; the inner wall of the spherical cover is provided with an electric cathode, and the inlet of the waste liquid tank is provided with an electric anode; the positive electrode and the negative electrode of the direct current power supply are respectively connected with the electric anode and the electric cathode to maintain an electric field between the electric anode and the electric cathode; the test liquid sample in the liquid core waveguide tube is sprayed to the electric cathode along the spraying axis through the outflow tube, so that the test liquid sample with negative charges is attracted to the electric anode under the action of an electric field and enters the waste liquid tank;
4) test end and data post-processing
When the electric piston moves to the bottom of the right side in the liquid inlet device in a translation way, the whole liquid inlet device is free from a test liquid sample, and the test is finished; the main controller sends out an instruction to close the Raman laser and the Raman spectrometer; the main controller carries out statistical accumulation and average processing on the obtained multiple groups of dynamic liquid core waveguide Raman spectrum data to obtain Raman spectrum signals reflecting the health condition of the astronauts and related to the contents of creatinine, protein and urea in urine of the astronauts, and compares the signal data with health indexes to finish health assessment;
5) post-treatment of residual waste liquid
The main controller sends a control command to the stepper motor to drive the electric piston to slowly translate leftwards in the liquid inlet device until reaching the leftmost position of the liquid inlet device; opening the sealing cover, introducing clean water into the liquid inlet device through the liquid inlet, and covering the sealing cover after the introduction is finished; the main controller sends a control instruction to the stepper motor to drive the electric piston to slowly translate to the right in the liquid inlet device, clean water is slowly pushed into the liquid core waveguide tube through the connecting hose and the inflow pipe, meanwhile, residual waste liquid in the liquid core waveguide tube is pressed into the collecting subsystem to be collected until the electric piston translates to the bottom of the right side in the liquid inlet device, at the moment, only clean water exists in the liquid core waveguide tube, the main controller sends an instruction, and the direct-current power supply is disconnected.
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