Air negative ion automatic observation instrument

Abstract

The utility model belongs to the field of negative ion detection technology discloses air negative ion automatic observation appearance, including the casing, the inside fixed mounting of casing has negative ion sensor and controller, negative ion sensor sets up two, can alternately use two negative ion sensors all with controller electricity is connected, the side fixed embedding of controller has display screen, display screen and controller electricity is connected, the utility model sets up two alternately usable negative ion sensors, through controller time -sharing switch working condition. When one sensor detects, another can start fan reversal and carry out self -cleaning, avoid single sensor failure and lead to equipment shutdown, satisfy long -term continuous monitoring demand, reduce maintenance influence to monitoring continuity, the reverse convex sealing ring between lower porcelain cover and lower insulating cover is under the spring pressure effect, closely fits lower porcelain cover inner wall and lower insulating cover bottom, effectively prevents air leakage, guarantees the detection airflow stability.

Description

Technical Field

[0001] This utility model relates to the field of negative ion detection technology, and in particular to an automatic air negative ion observation instrument. Background Technology

[0002] As a natural substance with significant impacts on the ecological environment and human health, the concentration level of negative air ions has become one of the key indicators for measuring air quality and the state of the ecological environment. Automatic negative air ion monitoring instruments are devices specifically designed to monitor the concentration of negative ions in the air.

[0003] In recent years, with increasing public awareness of ecological environment and healthy living, air negative ion monitoring technology has developed rapidly, and various types of air negative ion monitors have appeared on the market. Most existing monitors are based on coaxial cylindrical or parallel plate structures, capturing negative ions in the air and converting them into electrical signals to detect concentration.

[0004] However, existing air negative ion monitors generally only have a single negative ion sensor. Once the negative ion sensor malfunctions, the entire device needs to be shut down for maintenance, which cannot meet the requirements for continuous monitoring.

[0005] Therefore, an automatic air negative ion monitoring instrument is proposed. Utility Model Content

[0006] The purpose of this invention is to provide an automatic air negative ion monitoring instrument, thereby solving or at least alleviating one or more of the above-mentioned problems and other problems existing in the prior art.

[0007] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0008] An automatic air negative ion monitoring device includes a housing, inside which a negative ion sensor and a controller are fixedly installed. There are two negative ion sensors, both of which can be used alternately and are electrically connected to the controller. A display screen is fixedly embedded on one side of the controller and is electrically connected to the controller.

[0009] In the automatic air negative ion monitoring instrument according to this utility model, the negative ion sensor includes a protective shell, the protective shell being fixed inside the housing, an upper insulating sleeve and a lower insulating sleeve being fixedly installed at the upper and lower ends of the protective shell respectively, an outer cylinder electrode being fixedly connected between the upper insulating sleeve and the lower insulating sleeve, an inner shaft electrode being provided inside the outer cylinder electrode, an air flow channel being provided between the inner shaft electrode and the outer cylinder electrode, the upper end of the inner shaft electrode being fixedly fixed at the upper end of the inner insulating sleeve, a fan being fixedly installed at the top of the upper insulating sleeve, and the outer cylinder electrode, the inner shaft electrode and the fan being electrically connected to the controller.

[0010] In the automatic air negative ion monitoring instrument according to this utility model, a lower ceramic sleeve is fixedly installed at the bottom of the protective shell, the lower end of the lower ceramic sleeve protrudes from the bottom of the shell, and an upper ceramic sleeve is fixedly connected to the top of the protective shell, the upper end of the upper ceramic sleeve protrudes from the top of the shell.

[0011] In the automatic air negative ion monitoring instrument according to this utility model, an inverted convex sealing ring is provided between the lower ceramic sleeve and the lower insulating sleeve. The lower outer wall of the inverted convex sealing ring is in sealing contact with the inner wall of the lower ceramic sleeve. The top of the inverted convex sealing ring presses against the bottom of the lower insulating sleeve. A spring is sleeved on the lower end of the inverted convex sealing ring. The bottom of the spring presses against the lower inner end of the lower ceramic sleeve, and the top of the spring abuts against the bottom of the upper end of the inverted convex sealing ring.

[0012] In the automatic air negative ion monitoring instrument according to this utility model, a filter screen is installed at the air inlet of the lower ceramic sleeve, a grid sleeve is installed at the air outlet of the upper ceramic sleeve, an annular mesh is inserted into the inner side of the grid sleeve, and a plug is installed on the top of the annular mesh.

[0013] In the automatic air negative ion monitoring instrument according to this utility model, a protective cover plate for protecting the display screen is provided on one side of the housing. The upper end of the protective cover plate is hinged to the housing via a hinge, and a knob buckle is installed at the lower end of the protective cover plate. A slot is provided at the bottom of the housing, and the buckle head of the knob buckle can be locked in the slot.

[0014] In the automatic air negative ion monitoring instrument according to this utility model, a temperature and humidity sensor is fixedly installed on the top of the housing, and the temperature and humidity sensor is electrically connected to the controller.

[0015] In the automatic air negative ion monitoring instrument according to the present invention, a protective cover is fixedly installed on the top of the housing, the temperature and humidity sensor is located inside the protective cover, and a through hole is provided on the protective cover for the lower end of the plug to be inserted into the grid sleeve.

[0016] In the automatic air negative ion monitoring instrument according to the present invention, a connector for connecting to an external mains power supply is fixedly installed at the bottom of the housing, and the connector is electrically connected to the controller.

[0017] In the automatic air negative ion monitoring instrument according to the present invention, heat dissipation vents are provided on both opposite sides of the housing, and an interception net is installed inside the heat dissipation vents.

[0018] This utility model has at least the following beneficial effects:

[0019] Two alternating negative ion sensors are installed, with the controller switching their operating states in a time-sharing manner. When one sensor is detecting, the other can activate its fan to reverse and perform self-cleaning, preventing equipment downtime due to a single sensor failure, meeting the needs of long-term continuous monitoring, and reducing the impact of maintenance on monitoring continuity.

[0020] The negative ion sensor uses an outer cylinder electrode and an inner shaft electrode to form a radial electric field, which, together with a fan, generates a stable airflow to ensure that air passes through the electric field at a constant speed, reducing the impact of airflow fluctuations on ion capture.

[0021] The upper and lower ceramic sleeves extend the air inlet and outlet to the outside of the housing, avoiding interference from the temperature and electromagnetic environment inside the housing on the airflow;

[0022] The temperature and humidity sensor monitors environmental parameters in real time. The controller further improves the detection accuracy by correcting the change in ion mobility with temperature. The temperature and humidity data are stored synchronously with the negative ion concentration for easy subsequent correlation analysis.

[0023] Under the pressure of the spring, the inverted convex sealing ring between the lower porcelain sleeve and the lower insulating sleeve fits tightly against the inner wall of the lower porcelain sleeve and the bottom of the lower insulating sleeve, effectively preventing airflow leakage and ensuring the stability of the detection airflow.

[0024] The filter screen at the air inlet of the lower ceramic sleeve and the ring-shaped baffle at the air outlet of the upper ceramic sleeve can intercept large particles of impurities, preventing them from contaminating the electrodes and affecting the detection.

[0025] The protective cover, together with the knob buckle and slot, can protect the display screen from impacts, ultraviolet rays, rain, snow and dust and other outdoor environmental factors, and also has a dustproof and sealing function;

[0026] The heat dissipation vents on both sides of the casing dissipate internal heat through natural convection, maintaining the normal operating temperature of the equipment, while the internal mesh screen prevents dust from entering. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0028] Figure 1 This is a schematic diagram of the structure of this utility model;

[0029] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0030] Figure 3 This is a schematic diagram of the structure of the protective cover of this utility model when it is opened;

[0031] Figure 4 This is one of the partial structural schematic diagrams of this utility model;

[0032] Figure 5 A cross-sectional structural diagram of this utility model;

[0033] Figure 6 This is the second partial structural schematic diagram of this utility model.

[0034] Explanation of icon numbers:

[0035] 1. Housing; 101. Heat dissipation vent; 1011. Interception net; 102. Protective cover; 103. Plug; 104. Protective cover plate; 105. Knob buckle; 106. Slot; 107. Aviation plug;

[0036] 2. Negative ion sensor; 201. Protective shell; 202. Outer cylinder; 203. Inner shaft; 204. Fan; 205. Upper ceramic sleeve; 206. Lower ceramic sleeve; 207. Inverted convex sealing ring; 208. Spring; 209. Filter screen; 210. Grid sleeve; 211. Annular barrier; 212. Upper insulating sleeve; 213. Lower insulating sleeve;

[0037] 3. Controller;

[0038] 4. Display screen;

[0039] 5. Temperature and humidity sensor. Detailed Implementation

[0040] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0041] Please refer to Figures 1 to 6 As shown in the embodiments of this utility model,

[0042] The automatic air negative ion monitoring device includes a housing 1. Inside the housing 1, a negative ion sensor 2 and a controller 3 are fixedly installed. There are two negative ion sensors 2, which can be used alternately. Both negative ion sensors 2 are electrically connected to the controller 3. A display screen 4 is fixedly embedded on one side of the controller 3 and is electrically connected to the controller 3.

[0043] Two negative ion sensors work alternately; while one sensor is detecting, the other can self-clean, ensuring long-term stability.

[0044] In use, the controller 3 activates the two sensors sequentially through a time-sharing switching circuit, collects the micro-current signals output by them, calculates the ion concentration after IV conversion, amplification and filtering, and displays it in real time on the display screen 4.

[0045] The housing 1 provides physical support and electromagnetic shielding, while the controller 3 coordinates sensor power supply, signal processing, and human-machine interaction to form a closed-loop monitoring system.

[0046] Specifically, in this embodiment, the negative ion sensor 2 includes a protective shell 201, which is fixed inside the housing 1. An upper insulating sleeve 212 and a lower insulating sleeve 213 are fixedly installed at the upper and lower ends of the protective shell 201, respectively. An outer cylinder electrode 202 is fixedly connected between the upper insulating sleeve 212 and the lower insulating sleeve 213. An inner shaft electrode 203 is provided inside the outer cylinder electrode 202. An air flow channel is provided between the inner shaft electrode 203 and the outer cylinder electrode 202. The upper end of the inner shaft electrode 203 is fixed to the upper end of the upper insulating sleeve 212. A fan 204 is fixedly installed on the top of the upper insulating sleeve 212. The outer cylinder electrode 202, the inner shaft electrode 203, and the fan 204 are all electrically connected to the controller 3.

[0047] In use, the controller 3 applies a high DC voltage between the outer cylinder electrode 202 and the inner shaft electrode 203, forming a radial electric field that drives ions in the air to migrate radially. The fan 204 generates a stable airflow, which introduces ion-containing air into the sensor through the airflow channel, ensuring that the ions pass through the electric field at a constant speed, thus improving detection accuracy.

[0048] The upper insulating sleeve 212 and the lower insulating sleeve 213 are made of ceramic or polyimide materials to isolate the electrodes from the protective shell 201, avoid short circuits and concentrate the electric field area.

[0049] In this embodiment, a lower ceramic sleeve 206 is fixedly installed at the bottom of the protective shell 201, and the lower end of the lower ceramic sleeve 206 extends out from the bottom of the shell 1. An upper ceramic sleeve 205 is fixedly connected to the top of the protective shell 201, and the upper end of the upper ceramic sleeve 205 extends out from the top of the shell 1.

[0050] The lower ceramic sleeve 206 and the upper ceramic sleeve 205 extend the air inlet and outlet of the sensor to the outside of the housing 1, so as to avoid the internal airflow being affected by the internal temperature or electromagnetic interference of the housing 1.

[0051] The upper ceramic sleeve 205 and the lower ceramic sleeve 206 can be made of alumina ceramic, which has high insulation and corrosion resistance, preventing external moisture or pollutants from entering the sensor, while supporting the structural stability of the protective shell 201.

[0052] In this embodiment, an inverted convex sealing ring 207 is provided between the lower ceramic sleeve 206 and the lower insulating sleeve 213. The lower outer wall of the inverted convex sealing ring 207 is in sealing contact with the inner wall of the lower ceramic sleeve 206. The top of the inverted convex sealing ring 207 presses against the bottom of the lower insulating sleeve 213. A spring 208 is sleeved on the lower end of the inverted convex sealing ring 207. The bottom of the spring 208 presses against the lower inner end of the lower ceramic sleeve 206, and the top of the spring 208 abuts against the bottom of the upper end of the inverted convex sealing ring 207.

[0053] Spring 208 provides continuous pressure to push the inverted convex sealing ring 207 to fit tightly against the inner wall of the lower ceramic sleeve 206, preventing air leakage; the inverted convex design of the sealing ring can disperse stress and adapt to material expansion caused by temperature changes.

[0054] In this embodiment, a filter screen 209 is installed at the air inlet of the lower ceramic sleeve 206, and a grid sleeve 210 is installed at the air outlet of the upper ceramic sleeve 205. An annular mesh 211 is inserted into the inner side of the grid sleeve 210, and a plug 103 is installed on the top of the annular mesh 211.

[0055] The filter 209 intercepts large particulate impurities, such as dust and insects, in the air that enters the negative ion sensor 2. The ring-shaped screen 211 is used to intercept large particulate impurities that enter the negative ion sensor 2 from the air outlet, preventing them from entering the sensor and contaminating the electrodes.

[0056] The set grid sleeve 210 makes the airflow at the air outlet evenly distributed, avoiding turbulence interference with the detection; the plug 103 can be removed periodically to facilitate cleaning of the screen 211.

[0057] When a negative ion sensor 2 needs to be self-cleaned, the controller 3 controls the corresponding fan 204 to rotate, thereby blowing off the dust clogging the filter screen 209.

[0058] In this embodiment, a protective cover plate 104 for protecting the display screen 4 is provided on one side of the housing 1. The upper end of the protective cover plate 104 is hinged to the housing 1 via a hinge, and a knob buckle 105 is installed at the lower end of the protective cover plate 104. A slot 106 is provided at the bottom of the housing 1, and the head of the knob buckle 105 can be locked in the slot 106.

[0059] The protective cover 104 is made of transparent and impact-resistant material, such as PC plastic, to prevent the display screen 4 from being impacted by external forces or aged by ultraviolet rays; the knob buckle 105 cooperates with the slot 106 to ensure that the cover is sealed and dustproof when closed.

[0060] When in use, after opening the cover 104, the display screen 4 can be operated to set parameters or query data. When closed, it protects the screen from the influence of the outdoor environment, such as rain, snow, and dust.

[0061] In this embodiment, a temperature and humidity sensor 5 is fixedly installed on the top of the housing 1, and the temperature and humidity sensor 5 is electrically connected to the controller 3.

[0062] Temperature and humidity sensor 5 monitors ambient temperature and humidity in real time. Controller 3 corrects for changes in ion mobility with temperature using a lookup table method; for example, mobility increases by approximately 2% for every 10°C increase, thus improving detection accuracy. Temperature and humidity data are stored synchronously with ion concentration data, facilitating subsequent analysis of the impact of environmental factors on ion distribution.

[0063] In this embodiment, a protective cover 102 is fixedly installed on the top of the housing 1, and the temperature and humidity sensor 5 is located inside the protective cover 102. The protective cover 102 has a through hole for inserting the lower end of the plug 103 into the grid sleeve 210.

[0064] The protective cover 102 is made of a high-reflectivity material, such as ASA plastic, to reduce the interference of solar radiation on the temperature and humidity sensor 5; the internal matte black coating reduces reflection and avoids temperature measurement deviation.

[0065] The through-hole design allows the plug 103 to pass through the protective cover 102 and connect to the grid sleeve 210, ensuring that the protective cover does not need to be removed during maintenance, thus improving operational convenience.

[0066] In this embodiment, a connector 107 for connecting to external mains power is fixedly installed at the bottom of the housing 1, and the connector 107 is electrically connected to the controller 3.

[0067] The Hangbang 107 features an industrial-grade waterproof design, such as an M12 interface, providing a stable 220V AC power input to support long-term outdoor operation; the internal pins are gold-plated to reduce contact resistance and prevent overheating.

[0068] The outer casing of the aircraft plug is grounded with housing 1 to shield external electromagnetic interference and ensure that the power supply stability has no impact on micro-current detection.

[0069] In this embodiment, heat dissipation vents 101 are provided on both opposite sides of the housing 1, and an interception net 1011 is installed inside the heat dissipation vents 101.

[0070] The heat dissipation vent 101 dissipates the heat generated by the controller 3 and sensor 2 through natural convection, maintaining the equipment within the normal temperature range.

[0071] The 1011 interceptor uses a fine metal mesh, which allows air to circulate while blocking dust from entering the housing, thus preventing dust accumulation from affecting the performance of circuits or sensors.

[0072] When using,

[0073] In the initial state, the first negative ion sensor 2 is activated, and the second negative ion sensor 2 is on standby. The controller 3 applies a +3000V voltage to the outer cylinder electrode 202 of the first negative ion sensor 2 through a relay switching circuit, and the inner shaft electrode 203 is grounded to form a radial electric field; at the same time, the fan 204 is started to rotate forward, and the air is discharged through the filter screen 209 → lower ceramic sleeve 206 → air flow channel → grid sleeve 210 → annular filter screen 211.

[0074] Under the influence of the electric field, negative ions migrate towards the positive electrode - outer cylinder electrode 202. The resulting microcurrent is converted by IV and then continuously collected by the ADC module of controller 3 for 100 sets of data. After removing the maximum and minimum values, the average value is taken to calculate the real-time concentration value.

[0075] The sensor is switched every 24 hours. When switching, the controller 3 cuts off the high voltage of the original negative ion sensor 2 and starts its fan 204 to reverse for 10 seconds to blow off the dust attached to the surface of the filter screen 209, thus completing the self-cleaning process.

[0076] Data processing and display:

[0077] The controller 3 integrates the calculated ion concentration with the environmental parameters collected by the temperature and humidity sensor 5, and transmits the data to the display screen 4 via the RS485 bus.

[0078] It should be noted that the controller 3 uses an STM32H743 microprocessor with a main frequency of 400MHz and an integrated 16-bit ADC module. The fan 204 is a DC brushless fan with a rated voltage of 12V, a speed of 5000rpm, an air volume of 8CFM, and supports forward and reverse rotation control. The air pressure can reach 20Pa when in reverse rotation. The temperature and humidity sensor 5 is model SHT30.

[0079] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the present invention's conception through the foregoing teachings or related technical or knowledge. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. An automatic air negative ion observation instrument, characterized by, Includes a housing (1), inside which a negative ion sensor (2) and a controller (3) are fixedly installed. There are two negative ion sensors (2), and the two negative ion sensors (2) that can be used alternately are electrically connected to the controller (3). A display screen (4) is fixedly embedded on one side of the controller (3), and the display screen (4) is electrically connected to the controller (3).

2. The automatic anion observation apparatus according to claim 1, characterized by: The negative ion sensor (2) includes a protective shell (201), which is fixed inside the housing (1). An upper insulating sleeve (212) and a lower insulating sleeve (213) are fixedly installed at the upper and lower ends of the protective shell (201), respectively. An outer cylinder electrode (202) is fixedly connected between the upper insulating sleeve (212) and the lower insulating sleeve (213). An inner shaft electrode (203) is provided inside the outer cylinder electrode (202). An air flow channel is provided between the inner shaft electrode (203) and the outer cylinder electrode (202). The upper end of the inner shaft electrode (203) is fixed inside the upper end of the upper insulating sleeve (212). A fan (204) is fixedly installed on the top of the upper insulating sleeve (212). The outer cylinder electrode (202), the inner shaft electrode (203), and the fan (204) are all electrically connected to the controller (3).

3. The automatic anion observation apparatus according to claim 2, characterized by: The bottom of the protective shell (201) is fixedly installed with a lower ceramic sleeve (206), the lower end of which protrudes from the bottom of the shell (1). The top of the protective shell (201) is fixedly connected with an upper ceramic sleeve (205), the upper end of which protrudes from the top of the shell (1).

4. The automatic anion observation apparatus according to claim 3, characterized by: An inverted convex sealing ring (207) is provided between the lower ceramic sleeve (206) and the lower insulating sleeve (213). The lower outer wall of the inverted convex sealing ring (207) is in sealing contact with the inner wall of the lower ceramic sleeve (206). The top of the inverted convex sealing ring (207) presses against the bottom of the lower insulating sleeve (213). A spring (208) is sleeved on the lower end of the inverted convex sealing ring (207). The bottom of the spring (208) presses against the lower inner end of the lower ceramic sleeve (206). The top of the spring (208) abuts against the bottom of the upper end of the inverted convex sealing ring (207).

5. The automatic anion observation apparatus according to claim 4, characterized by: The air inlet of the lower ceramic sleeve (206) is equipped with a filter screen (209), the air outlet of the upper ceramic sleeve (205) is equipped with a grid sleeve (210), an annular mesh (211) is inserted into the inner side of the grid sleeve (210), and a plug (103) is installed on the top of the annular mesh (211).

6. The automatic anion observation apparatus according to claim 5, characterized by: A protective cover (104) for protecting the display screen (4) is provided on one side of the housing (1). The upper end of the protective cover (104) is hinged to the housing (1) by a hinge. A knob buckle (105) is installed at the lower end of the protective cover (104). A slot (106) is provided at the bottom of the housing (1). The buckle head of the knob buckle (105) can be locked in the slot (106).

7. The automatic anion observation apparatus according to claim 6, characterized by: A temperature and humidity sensor (5) is fixedly installed on the top of the housing (1), and the temperature and humidity sensor (5) is electrically connected to the controller (3).

8. The automatic air negative ion monitoring instrument according to claim 7, characterized in that: A protective cover (102) is fixedly installed on the top of the housing (1). The temperature and humidity sensor (5) is located inside the protective cover (102). A through hole is provided on the protective cover (102) for the lower end of the plug (103) to be inserted into the grid sleeve (210).

9. The automatic air negative ion monitoring instrument according to claim 1, characterized in that: The bottom of the housing (1) is fixedly installed with a connector (107) for connecting to external mains power, and the connector (107) is electrically connected to the controller (3).

10. The automatic air negative ion monitoring instrument according to any one of claims 1-9, characterized in that: The housing (1) has heat dissipation vents (101) on both opposite sides, and an interception net (1011) is installed inside the heat dissipation vents (101).

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