Calibration device for anti-interference evaluation of portable bioaerosol monitor
The calibration device for evaluating the anti-interference capabilities of portable bioaerosol monitors utilizes multiple injection ports and auxiliary temperature control components to generate mixed aerosols, thus solving the problem of accuracy in complex environments for portable bioaerosol monitors and achieving efficient bioaerosol differentiation and stable detection results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- BEIJING INST OF METROLOGY & TESTING SCI
- Filing Date
- 2026-04-13
- Publication Date
- 2026-06-12
AI Technical Summary
Existing portable bioaerosol monitors struggle to effectively distinguish between biological fluorescence and non-biological particles or chemical fluorescence interference in complex environments, and the results are easily affected by temperature and humidity. Furthermore, there is a lack of portable calibration devices to ensure detection accuracy.
A calibration device for evaluating the anti-interference capabilities of a portable bioaerosol monitor was designed. It includes multiple inlets and atomizing nozzles, combined with auxiliary temperature control components and stirring fins. By generating mixed bioaerosols to simulate a complex environment, the device uses a heat exchange box and a semiconductor cooling chip to regulate temperature and humidity, ensuring detection accuracy.
It enables accurate differentiation and detection of bioaerosols in complex environments, improves the accuracy and stability of detection results, and is suitable for the calibration of portable bioaerosol monitors.
Smart Images
Figure CN122193031A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of bioaerosol monitoring technology, and more specifically, to a calibration device for evaluating the anti-interference capabilities of portable bioaerosol monitoring instruments. Background Technology
[0002] Aerosols are gaseous dispersion systems composed of solid or liquid particles suspended in a gaseous medium. A real-time bioaerosol monitor is an atmospheric detection instrument used in preventive medicine and public health to detect the concentration of a specific microorganism in the air. Therefore, establishing a bioaerosol monitor calibration device capable of installing atomizers for different interfering substances, adjusting temperature and humidity, and supporting portable calibration is essentially constructing a miniaturized, portable aerosol generation and testing environment simulation system. This requires not only integrating aerosol generation, environmental control, and standard metrology technologies but also ensuring the system's portability and stability. Currently, there is an urgent need for a portable bioaerosol monitor anti-interference evaluation calibration device to address the aforementioned issues. Summary of the Invention
[0003] To address the shortcomings of existing technologies, this invention provides a calibration device for evaluating the anti-interference capabilities of portable bioaerosol monitors.
[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A calibration device for evaluating the anti-interference performance of a portable bioaerosol monitor includes a base, a control host mounted on the upper surface of the base, a mixing detection tank mounted on the upper surface of the base, a pure water storage box mounted on the upper surface of the base, an interfering solvent box mounted above the pure water storage box, a test solution box mounted above the interfering solvent box, an auxiliary temperature control component mounted on the upper surface of the base, and an auxiliary mixing component mounted on the upper surface of the mixing detection tank. The auxiliary temperature control component includes a heat exchange box, heat exchange pipes, a circulating pump, an electric heating rod, a semiconductor refrigeration chip, and a dustproof box. The heat exchange box is installed on the upper surface of the base, the circulating pump is installed on the upper surface of the heat exchange box, the dustproof box is installed on the outer side of the heat exchange box, the electric heating rod is installed inside the heat exchange box, the semiconductor refrigeration chip is installed inside the heat exchange box, and the heat exchange pipes are arranged around the outer side of the mixing detection tank. The auxiliary mixing component includes a drive motor, a motor shaft, a top plate, a bottom plate, and agitating fins. The drive motor is installed on the upper surface of the mixing detection tank, and the output end of the drive motor is fitted with a motor shaft. The mixing detection tank has a top plate inside, a bottom plate inside, and agitating fins between the top plate and the bottom plate.
[0005] Preferably, the heat exchange pipe and the mixing detection tank in contact with the heat exchange pipe are made of copper-aluminum alloy. The outer side of the heat exchange pipe and the part of the mixing detection tank that is not in contact with the heat exchange pipe are provided with a heat insulation layer. A connecting pipe is provided at the lower end of the heat exchange box, and the inside of the heat exchange box is connected to the inside of the heat exchange pipe through the connecting pipe.
[0006] Preferably, the circulation pump has an inlet pipe at its input end, which connects the circulation pump to the inside of the heat exchange box. The circulation pump also has a water supply pipe at its output end, which connects the circulation pump to the inside of the heat exchange pipe. The circulation pump is electrically connected to the control host via a wire, and the heat exchange box is pre-filled with heat transfer fluid.
[0007] Preferably, a temperature sensor is installed at the top inside the heat exchange box. The temperature sensor is electrically connected to the control host via a wire. The electric heating rod is electrically connected to the control host via a wire. The semiconductor refrigeration chip is electrically connected to the control host via a wire. A cooling end is provided on the inner side of the semiconductor refrigeration chip.
[0008] Preferably, the semiconductor cooling chip has a heat dissipation end on its outer side, the dustproof box is clipped onto the outer side of the heat dissipation end, a heat dissipation fan is installed inside the dustproof box, and the heat dissipation fan is electrically connected to the control host through a wire.
[0009] Preferably, the drive motor is electrically connected to the control host via a wire, and the drive motor is fixedly connected to the top plate via a motor shaft. The agitator fins are provided in three sets of equal specifications, and the three sets of agitator fins are distributed at equal intervals between the top seat and the base.
[0010] Preferably, the mixing and detection container is provided with a first inlet on the outside, the test solution box contains a test solvent, a first pump is installed on the outer side of the test solution box, a first atomizing nozzle is provided inside the first inlet, the test solution box is connected to the first atomizing nozzle through the first pump, and the first pump is electrically connected to the control host through a wire.
[0011] Preferably, a second inlet is provided on the outside of the mixing detection container, interfering solvent is poured into the interfering solvent box, a second pump is installed on the outer side of the interfering solvent box, a second atomizing nozzle is provided inside the second inlet, the interfering solvent box is connected to the second atomizing nozzle through the second pump, and the second pump is electrically connected to the control host through a wire.
[0012] Preferably, a third sample inlet is provided on the outside of the mixing detection tank, pure water is poured into the pure water storage box, a third pump is installed on the outer side of the pure water storage box, a third atomizing nozzle is provided inside the third sample inlet, the test solution box is connected to the third atomizing nozzle through the third pump, and the third pump is electrically connected to the control host through a wire.
[0013] Preferably, the mixing detection tank has a discharge port at its lower end, and a number of detection probes are installed at the top inside the mixing detection tank. The detection probes are electrically connected to the control host via wires.
[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the design of multiple injection ports and multiple sets of atomizing nozzles, a mixed bioaerosol containing biological sources, non-biological sources and specific chemical interferences can be generated in the mixed detection container, thereby simulating a complex environment so that the testing equipment can accurately distinguish between biological fluorescence and non-biological particles or chemical fluorescence interference.
[0015] 2. The mixture detection tank is humidified by atomizing pure water. The temperature inside the mixture detection tank is regulated by the heat exchange box and heat exchange pipes in the auxiliary temperature control component, in conjunction with electric heating rods and semiconductor cooling chips, so as to ensure the accuracy of the test results.
[0016] 3. By designing a mixing and detection tank, a drive motor, and stirring fins, the aerosol is thoroughly mixed, thus avoiding uneven mixing that could lead to excessively high local concentrations and affect the accuracy of the detection results. Attached Figure Description
[0017] Figure 1 A schematic diagram of the structure of a calibration device for evaluating the anti-interference capability of a portable bioaerosol monitor. Figure 2 Another structural schematic diagram of a calibration device for evaluating the anti-interference capabilities of a portable bioaerosol monitor. Figure 3 Another structural schematic diagram of a calibration device for evaluating the anti-interference capabilities of a portable bioaerosol monitor. Figure 4 A partial cross-sectional schematic diagram of a calibration device for evaluating the anti-interference capabilities of a portable bioaerosol monitor. Figure 5 A partial cross-sectional view of the heat exchange box in the calibration device for evaluating the anti-interference performance of a portable bioaerosol monitor. Figure 6 A partial cross-sectional view of the dustproof box in the calibration device for evaluating the anti-interference performance of a portable bioaerosol monitor. Figure 7A partial cross-sectional view of the mixing detection tank in the calibration device for evaluating the anti-interference performance of a portable bioaerosol monitor.
[0018] In the diagram: 1-Base, 2-Control unit, 3-Mixed detection container, 31-First inlet, 32-Second inlet, 33-Third inlet, 34-Detection probe, 35-Outlet, 4-Solution box to be tested, 41-First pump, 42-First atomizing nozzle, 5-Interfering solvent box, 51-Second pump, 52-Second atomizing nozzle, 6-Pure water storage box, 61-Third pump, 62-Third atomizing nozzle, 7-Auxiliary temperature control component 71-Heat exchange box, 72-Heat exchange pipe, 721-Connecting pipe, 73-Circulating pump, 731-Inlet water pipe, 732-Water delivery pipe, 74-Temperature sensor, 75-Electric heating rod, 76-Semiconductor cooling chip, 761-Cooling end, 762-Heat dissipation end, 77-Dustproof box, 78-Cooling fan, 8-Auxiliary mixing component, 81-Drive motor, 82-Motor shaft, 83-Top plate, 84-Agitating fins, 85-Bottom plate. Detailed Implementation
[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.
[0020] Example like Figures 1-7 As shown, this embodiment of the invention provides a calibration device for evaluating the anti-interference performance of a portable bioaerosol monitor, including a base 1, a control host 2 mounted on the upper surface of the base 1, a mixing detection tank 3 disposed on the upper surface of the base 1, a pure water storage box 6 mounted on the upper surface of the base 1, an interfering solvent box 5 disposed on the upper end of the pure water storage box 6, a test solution box 4 disposed above the interfering solvent box 5, an auxiliary temperature control component 7 disposed on the upper surface of the base 1, and an auxiliary mixing component 8 disposed on the upper end of the mixing detection tank 3; The auxiliary temperature control component 7 includes a heat exchange box 71, a heat exchange pipe 72, a circulating pump 73, an electric heating rod 75, a semiconductor cooling chip 76, and a dustproof box 77. The heat exchange box 71 is installed on the upper surface of the base 1, the circulating pump 73 is installed on the upper surface of the heat exchange box 71, the dustproof box 77 is installed on the outer side of the heat exchange box 71, the electric heating rod 75 is installed inside the heat exchange box 71, the semiconductor cooling chip 76 is installed inside the heat exchange box 71, and the heat exchange pipe 72 is arranged around the outer side of the mixing detection tank 3. The auxiliary mixing component 8 includes a drive motor 81, a motor shaft 82, a top plate 83, a bottom plate 85, and stirring fins 84. The drive motor 81 is installed on the upper surface of the mixing detection tank 3, and the motor shaft 82 is clamped at the output end of the drive motor 81. The top plate 83 is provided inside the mixing detection tank 3, and the bottom plate 85 is provided inside the mixing detection tank 3. The stirring fins 84 are provided between the top plate 83 and the bottom plate 85.
[0021] In this embodiment, the heat exchange pipe 72 and the mixing detection tank 3 in contact with the heat exchange pipe 72 are made of copper-aluminum alloy. Copper-aluminum alloy has strong thermal conductivity, thereby better heat exchange between the heat exchange pipe 72 and the mixing detection tank 3. The outer side of the heat exchange pipe 72 and the part of the mixing detection tank 3 that is not in contact with the heat exchange pipe 72 are provided with a heat insulation layer. This design can reduce the impact of the external environment on the mixing detection tank 3 and reduce the heat loss of the heat exchange pipe 72. A connecting pipe 721 is provided at the lower end of the heat exchange box 71. The inside of the heat exchange box 71 is connected to the inside of the heat exchange pipe 72 through the connecting pipe 721. The heat transfer fluid inside the heat exchange pipe 72 can enter the heat exchange box 71 through the connecting pipe 721.
[0022] In this embodiment, the input end of the circulating pump 73 is provided with a water inlet pipe 731, and the circulating pump 73 is connected to the inside of the heat exchange box 71 through the water inlet pipe 731. The output end of the circulating pump 73 is provided with a water delivery pipe 732, and the circulating pump 73 is connected to the inside of the heat exchange pipe 72 through the water delivery pipe 732. The circulating pump 73 can extract the heat transfer liquid inside the heat exchange box 71 through the water inlet pipe 731 and deliver the heat transfer liquid to the inside of the heat exchange pipe 72 through the water delivery pipe 732. The circulating pump 73 is electrically connected to the control host 2 through a wire. The heat exchange box 71 is pre-filled with heat transfer liquid. The control host 2 can control the opening and closing of the circulating pump 73.
[0023] In this embodiment, a temperature sensor 74 is installed at the top of the heat exchange box 71. The temperature sensor 74 is electrically connected to the control host 2 via a wire. The temperature sensor 74 can detect the temperature inside the heat exchange box 71 and transmit the temperature data to the control host 2. An electric heating rod 75 is electrically connected to the control host 2 via a wire. The control host 2 can control the electric heating rod 75 to turn on and off. The electric heating rod 75 can heat the heat transfer fluid. A semiconductor refrigeration chip 76 is electrically connected to the control host 2 via a wire. A cooling end 761 is provided on the inner side. The control host 2 can control the opening and closing of the thermoelectric cooler 76. The thermoelectric cooler 76 can cool the heat transfer fluid through the cooling end 761. A heat dissipation end 762 is provided on the outer side of the thermoelectric cooler 76. A dustproof box 77 is installed on the outside of the heat dissipation end 762. A cooling fan 78 is installed inside the dustproof box 77. The cooling fan 78 is electrically connected to the control host 2 through wires. The cooling fan 78, together with the dustproof box 77, can provide auxiliary heat dissipation for the heat dissipation end 762 of the thermoelectric cooler 76.
[0024] In this embodiment, the drive motor 81 is electrically connected to the control host 2 via a wire. The control host 2 can control the opening and closing of the drive motor 81. The drive motor 81 is fixedly connected to the top plate 83 via the motor shaft 82. The drive motor 81 can drive the top plate 83 to rotate via the motor shaft 82. Three sets of stirring fins 84 are provided with the same specifications. The three sets of stirring fins 84 are evenly distributed between the top seat and the base 1. During the rotation of the stirring fins 84, the atomized gas inside the mixing detection tank 3 can be stirred and mixed evenly.
[0025] In this embodiment, a first inlet 31 is provided on the outside of the mixing and detection container 3, and the test solution box 4 contains the test solvent. A first pump 41 is installed on the outer side of the test solution box 4, and a first atomizing nozzle 42 is provided inside the first inlet 31. The test solution box 4 is connected to the first atomizing nozzle 42 through the first pump 41. The first pump 41 is electrically connected to the control host 2 through a wire. The first pump 41 can extract the test solvent inside the test solution box 4 and atomize it through the first atomizing nozzle 42.
[0026] In this embodiment, a second inlet 32 is provided on the outside of the mixing detection tank 3, and interfering solvent is poured into the interfering solvent box 5. A second pump 51 is installed on the outer side of the interfering solvent box 5, and a second atomizing nozzle 52 is provided inside the second inlet 32. The interfering solvent box 5 is connected to the second atomizing nozzle 52 through the second pump 51. The second pump 51 is electrically connected to the control host 2 through a wire. The second pump 51 can extract the interfering solvent inside the interfering solvent box 5 and atomize it through the second atomizing nozzle 52.
[0027] In this embodiment, a third inlet 33 is provided on the outside of the mixing and detection tank 3, pure water is poured into the pure water storage box 6, a third pump 61 is installed on the outer side of the pure water storage box 6, a third atomizing nozzle 62 is provided inside the third inlet 33, the test solution box 4 is connected to the third atomizing nozzle 62 through the third pump 61, and the third pump 61 is electrically connected to the control host 2 through a wire. The third pump 61 can draw out the pure water inside the pure water storage box 6 and atomize it through the third atomizing nozzle 62.
[0028] In this embodiment, the lower end of the mixing and testing tank 3 is provided with an outlet 35, and a number of testing probes 34 are installed at the top inside the mixing and testing tank 3. The testing probes 34 are electrically connected to the control host 2 through wires. The testing probes 34 include the standard probes of the equipment, the probe holder reserved for the equipment to be calibrated, and the ultraviolet lamp, so as to facilitate the processing and judgment of the testing data of the equipment to be calibrated and the inactivation and discharge of microorganisms.
[0029] Working principle: The user operates the control host 2 to set environmental parameters. At this time, the third pump 61 is turned on and the pure water in the pure water storage box 6 is atomized into the mixing detection tank 3 through the third atomizing nozzle, thereby increasing the humidity inside the mixing detection tank 3 to the preset value. Then, the control host 2 controls the electric heating rod 75 to turn on, and the electric heating rod 75 heats the heat transfer fluid inside the heat exchange box 71, thereby increasing the temperature of the heat transfer fluid. Then, the circulation pump 73 is turned on and draws the heat transfer fluid from the heat exchange box 71 through the water inlet pipe 731 and transports it to the heat exchange pipe 72 through the water delivery pipe 732. The heat transfer fluid inside the heat exchange pipe 72 exchanges heat with the mixing detection tank 3, thereby uniformly and stably increasing the temperature inside the mixing detection tank 3 until the temperature and humidity inside the mixing detection tank 3 reach the preset value and tend to stabilize. After stabilization, the first pump 41 is turned on and the temperature inside the mixing detection tank 3 is increased. The detection solvent inside the detection solution box 4 is extracted, causing it to form an aerosol inside the mixing detection tank 3 and generate a specific concentration gradient. Then, the detection probe 34 with calibration equipment is connected to the reserved position at the top of the mixing detection tank 3. Using the standard particle counter probe and fluorescence spectrometer probe calibrated by the National Institute of Metrology as reference values, the readings of the bioaerosol monitor to be calibrated are compared and analyzed. Then, while maintaining the bioaerosol background, the second pump 51 is turned on. The second pump 51 atomizes the interfering solvent inside the interfering solvent box 5 and mixes it evenly with the bioaerosol under the action of the drive motor 81 and the stirring fins 84. The interfering solvent includes non-biological particles and specific chemical interfering substances. Then, the reading drift and alarm response of the instrument being calibrated are observed. Finally, the counting efficiency, particle size deviation and fluorescence recognition accuracy of the instrument being calibrated can be calculated.
[0030] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A calibration device for evaluating the anti-interference performance of a portable bioaerosol monitor, comprising a base (1), characterized in that: A control host (2) is installed on the upper surface of the base (1), a mixing detection tank (3) is provided on the upper surface of the base (1), a pure water storage box (6) is installed on the upper surface of the base (1), an interfering solvent box (5) is provided on the upper end of the pure water storage box (6), a solution box (4) to be tested is provided above the interfering solvent box (5), an auxiliary temperature control component (7) is provided on the upper surface of the base (1), and an auxiliary mixing component (8) is provided on the upper end of the mixing detection tank (3). The auxiliary temperature control component (7) includes a heat exchange box (71), a heat exchange pipe (72), a circulation pump (73), an electric heating rod (75), a semiconductor refrigeration chip (76), and a dustproof box (77). The heat exchange box (71) is installed on the upper surface of the base (1). The circulation pump (73) is installed on the upper surface of the heat exchange box (71). The dustproof box (77) is installed on the outer side of the heat exchange box (71). The electric heating rod (75) is installed inside the heat exchange box (71). The semiconductor refrigeration chip (76) is installed inside the heat exchange box (71). The heat exchange pipe (72) is arranged around the outer side of the mixing detection tank (3). The auxiliary mixing component (8) includes a drive motor (81), a motor shaft (82), a top plate (83), a bottom plate (85), and stirring fins (84). The drive motor (81) is installed on the upper surface of the mixing detection tank (3). The output end of the drive motor (81) is fitted with the motor shaft (82). The top plate (83) is provided inside the mixing detection tank (3). The bottom plate (85) is provided inside the mixing detection tank (3). Stirring fins (84) are provided between the top plate (83) and the bottom plate (85).
2. The calibration device for evaluating the anti-interference performance of the portable bioaerosol monitor according to claim 1, characterized in that: The heat exchange pipe (72) and the mixing detection tank (3) in contact with the heat exchange pipe (72) are made of copper-aluminum alloy. The outer side of the heat exchange pipe (72) and the part of the mixing detection tank (3) that is not in contact with the heat exchange pipe (72) are provided with a heat insulation layer. The lower end of the heat exchange box (71) is provided with a connecting pipe (721). The interior of the heat exchange box (71) is connected to the interior of the heat exchange pipe (72) through the connecting pipe (721).
3. The calibration device for evaluating the anti-interference performance of the portable bioaerosol monitor according to claim 1, characterized in that: The circulation pump (73) is provided with an inlet pipe (731) at its input end. The circulation pump (73) is connected to the inside of the heat exchange box (71) through the inlet pipe (731). The circulation pump (73) is provided with a water supply pipe (732) at its output end. The circulation pump (73) is connected to the inside of the heat exchange pipe (72) through the water supply pipe (732). The circulation pump (73) is electrically connected to the control host (2) through a wire. The heat exchange box (71) is pre-filled with heat transfer liquid.
4. The calibration device for evaluating the anti-interference performance of the portable bioaerosol monitor according to claim 1, characterized in that: A temperature sensor (74) is installed at the top inside the heat exchange box (71). The temperature sensor (74) is electrically connected to the control host (2) via a wire. The electric heating rod (75) is electrically connected to the control host (2) via a wire. The semiconductor refrigeration chip (76) is electrically connected to the control host (2) via a wire. A refrigeration end (761) is provided on the inner side of the semiconductor refrigeration chip (76).
5. The calibration device for evaluating the anti-interference performance of the portable bioaerosol monitor according to claim 1, characterized in that: The semiconductor cooling chip (76) has a heat dissipation end (762) on its outer side. The dustproof box (77) is installed on the outer side of the heat dissipation end (762). A heat dissipation fan (78) is installed inside the dustproof box (77). The heat dissipation fan (78) is electrically connected to the control host (2) through a wire.
6. The calibration device for evaluating the anti-interference performance of the portable bioaerosol monitor according to claim 1, characterized in that: The drive motor (81) is electrically connected to the control host (2) through a wire. The drive motor (81) is fixedly connected to the top plate (83) through the motor shaft (82). The stirring fins (84) are provided in three sets of equal specifications. The three sets of stirring fins (84) are distributed at equal intervals between the top seat and the base (1).
7. The calibration device for evaluating the anti-interference performance of the portable bioaerosol monitor according to claim 1, characterized in that: The mixing detection tank (3) is provided with a first inlet (31) on the outside. The test solution box (4) contains a test solvent. A first pump (41) is installed on the outer side of the test solution box (4). A first atomizing nozzle (42) is provided inside the first inlet (31). The test solution box (4) is connected to the first atomizing nozzle (42) through the first pump (41). The first pump (41) is electrically connected to the control host (2) through a wire.
8. The calibration device for evaluating the anti-interference performance of the portable bioaerosol monitor according to claim 1, characterized in that: The mixing detection tank (3) is provided with a second inlet (32) on the outside. The interference solvent box (5) contains interference solvent. A second pump (51) is installed on the outer side of the interference solvent box (5). A second atomizing nozzle (52) is provided inside the second inlet (32). The interference solvent box (5) is connected to the second atomizing nozzle (52) through the second pump (51). The second pump (51) is electrically connected to the control host (2) through a wire.
9. The calibration device for evaluating the anti-interference performance of the portable bioaerosol monitor according to claim 1, characterized in that: The mixing detection tank (3) is provided with a third inlet (33) on the outside. The pure water storage box (6) is filled with pure water. A third pump (61) is installed on the outer side of the pure water storage box (6). A third atomizing nozzle (62) is provided inside the third inlet (33). The test solution box (4) is connected to the third atomizing nozzle (62) through the third pump (61). The third pump (61) is electrically connected to the control host (2) through a wire.
10. The calibration device for evaluating the anti-interference performance of the portable bioaerosol monitor according to claim 1, characterized in that: The mixing detection tank (3) is provided with an outlet (35) at the lower end. Several detection probes (34) are installed at the top inside the mixing detection tank (3). The detection probes (34) are electrically connected to the control host (2) through wires.